Proceedings of the 3rd International Conference on Rare Earth Development and Applications

Vol. II

Baotou, Inner Mongolia, August 21 -25, 1995 The Chinese Society of Rare Earths Edited by

Xu (iiiangxian Member of the Chinese Academy of Sciences Prof, of Vice President of CSRF

Xiao Jimei Member of the Chinese Academy of Sciences Prof, of I Iniversily of Science and Technology

Yu Zongsen Prof, of I Iniversity of Science and Technology Beijing Vice President and General Secretary of CSRF-*

Van Chunhua Prof, of Peking University Metallurgical Industry Press CONTENTS

Foreword

Welcoming Speech Zhou Chuandian.

Vol.1

Plennary Lectures

The Higher Oxides of the Rare Earths: A Model of Solid State Chemistry LeRoy Eyring I -containing Light-converting Nanometric Devices Jean-Claude G. Bunzli, Claude Piguet 9 Vapor Phase Extraction and Mutual Separation of Rare Earths Using Chemical Vapor Transport Mediated by Vapor Complexes Gin-va Adachi, Ken-ichi Machida, Kuniaki Mura.se 12 The Separation Processes of Main Minerals in China Yan Chunhua, Liao Chunsheng, Jianfang. Jia Jiangiao, Yawen, Li Biaoguo, Guangxian : 16

SECTION A RE NEW MATERIALS AND RE APPLICATIONS

New Materials

Mechanochemical Effects in the System Ln2OrI n(OH)^ (-\hO)(ljt\-\,a, Nd) Dimitr Todorovsky, A tanas. Terziev. 24 New Inorganic Materials Containing Rare Earths and Tetrahedral Anions TO4 Peir Melnikov, Lydia, Komissarova 28 Anisotropy of the g-Factor and a Procedure for its Determination: Application to ErNU N.A.de Oliveira, A.Caldas, P.J.von Ranke, I ..Palermo 31 Simulation of the Spectroscopic and Magnetic Properties of Trivalent Rare Earth Ions in Rare Earth Oxyfluoride Matrices Jorma Holsa, FAja Kesiisa, Pierre Porcher 35 Optical Properties and Energy Level Simulation of RE -ions in Rare Earth Oxychlorides Jorma Holsa, Ralf-Johan Lamminmaki, Pierre Porcher 39 Super conductivity in Fluorinated RE Cuprates Bernard Chevalier, Jean Etourneau, A lain Tressaud 43

About New Applications for the Rare Earths: Pigments and Solid State Ionics P. Maestro. D.Huguenin, F. Pettini, T. Seguelong 47 Magnetic Polaron Effects in Nonstoichiometric Semimetals GdAs and GdP D.X.Li, Y.Haga, H.Shida, T.Suzuki 51 Observation of Ferroelastic Domains in LaNbO4 Crystals by AFM 5.Tsunekawa, T.Nakada, RNishitani A.Kasuya 55 Complex Ahiminates and Gallates of Strontium and Rare Earth Elements G. V.Zimhta, L.N.Komissarova, LN.Smirnova, F.M.Spiridonov 56 Synthesis of High-Tc Superconductors by Oxidation of "1-2-3" Alloys Kononenko V.I., Akashev L.A., Shuravenko N.A.,Golubev S. V, Bezukladnikova L.L 57 Single Crystal Growth of Rare Earth and -Based Intermetallic Compounds YJ. Bi, D.Fort, J.S.Abell 58

Melt-Processed YBa2CuiO7-5 Thick Films with Additional Phases YJ. Bi,J.S. Abell 64 Rare Earth Boride Based Natural Composites Paderno Youri, Paderno Varvara, Filippov Vladimir 68 <111> Oriented and Twin-free Single Cryctals of Terfenol-D Grown by Czochralski Method with Cold Crucible Guangheng , Xuegen Zhao, Jinghua Wang, Jingyuan Li, KechangJia, Wenshan Zhan 72 The Structural Principle of the Homologous Series of the Higher Oxides of the Rare Earths Z.C. Kang, L. Eyring 76 Crystal Structure, Mossbauer Effect, Properties and Application of REFe2-Based (Tb, DyXFe,Mn), 95 Alloys Zhang Hongping, Du Ting, Kuang Mahua 80 Thermodynamics and Equilibrium Dissociation Pressures in the System SmH2-SmH3 Longmei Wang, Zheng Li, E.Kaldis 86 The Effect of RE on Structure & Property of Zn-AI Superplasttc Material Zhou Tianrui, Hu Shifei 90

Vl Magneto-Optical Properties and Stability of (id I hleCo Thin lihns Prepared by RF-magnetron Sputtering Qiu Jufeng 94 Study of Rare Earth Stabilized Zirconia Ultrafine Powders Wei Kun, Shi Yan, Zou Xinmu, He Lunpin 98 Study on Some Properties of Lalx Srx CoO^ and Its Application in Sealed-off CO2 Lasers Liu Jiang, He Lanying, Chen Guangyu, Su Wenhui 103 Rare Earth and Superplastic Materials Li Shichun, Hu Xiulian, Xu Yingda 107 Study on the Synthesis and Properties of Rare Earth Hydroxides and Oxides Ultrafine Powders Dong Xiangfing, Yang Kuisheng, Zhang Hongbo, Liu Jinghe, Hong Guangyan, Yu Decai 111 Study on Electrocatalytic Property of Anode Coating with Rare Earth Compounds Linjiyun, Wang Yunge, Chen Kangning 115 Study on Rare Earth Solid Electrolytes Wang Wenji, Chen Jingxi 119 Synthesis and Electrical Conduction Characteristics of LaCrO^ Ceramics Tang Zilong, Zhang Zhongtai, Jianquan, Li Ying 123 Study on the Preparation and Properties of CeO2 Ultrafing Powders by Sol-Gel Method Dong Siangting, Hong Guangyan, Yu Decai, Xiao Jun, Cui Yi, Wang Dejun 127 Rare Earth Stabilizer of Polyvinyl Chloride (PVC) Zhang Yongxiang, Liu Shengtai, Yin Chengxiang 131 Effects of RE on Superplasticity of Zn-5A1 Alloys Hu Xiulian, Li Shichun, YangChunsong 135

Magnetic Materials

Comparison of Corrosion Behaviour of RE-based Permanent Magnets Henryk Bala, Stefan Szymura, Marcin. A. Malik, Ken. Ohashi 139 Electroplating of Rare Earth Metals and Their Magnetic Properties Yuichi Sato, Yasuko Ibi, Koichi Kobayakawa. 143 Magnetic Anisotropy and Magnetostriction in Rare Earth f lydrogen Containing MgCuj-Type Compounds Mushnikov N.V., Zajkov N.K., Gaviko VS. Korolyov A. V.,YermakovA.Ye 147

vn Two Dimensional and Three Dimensional SmFc Random Magnets X.X. Zhang, J. Tejada 151 Exponential Relaxation and Quantum Tunneling of Antiferromagnetic Domain Walls in TbFeO.i Single Crystal J. Tejada, X.X. Zhang 157 Key Factors Influencing the Thermal Stability of NdFeB Sintered Magnets B.M. Ma, Y.L. Liang, W.L. Liu, D.W. Scott, CO. Bounds 162 The Study of Czochralski-Grown Magnetostrictrve Rare Earth-Iron Compounds YJ. Bi,J.S.Abell 166 Gas-treatment and Magnetic Domain Observation of SnrfcFew Alloys Jiang Long. Zhu Jinghan, Yang Weidong, Liu Guozheng, Naoki Matsumoto, Hiroshi Kubota, Kenji Ohmori 170 Study on the Pressing Nitriding Process of Sm2Fei7Nx Compounds Wu Jianmin, Cui Liya, Zhao Weihong ,Tai Lichi 174 Magnetic Properties of Nd-Fe-Co-B Rapidly Quenched Alloys Zhu Jinhan 177 Magnetic Circuit Optimization Desgin of a Drum-Type Medium Magnetic Separator with Rare-Earth Permanent Magnets ShuqingYang 180 Magnetic Circuit Design of Rare Earth Lifting Permanent Magnet DingNing '; 183 Reduction of Superfine Fe2Oiand NdFeOt Materials Shengfeng Liu, Xiaoliang Qian, Qiang Li, Jiatth.ua Lin, Mianzeng Su 187 Magnetism in RSrMnO Hou Bihui, Yang Biteeing, Yi Su, Lin Peiyan, Fu Yilu 191

Magnetic properties and Magnetostriction in Tbo.?Dyn.5(Fen.9MnxAln.i.x)i.<« Compounds Gao Youhui, Zhu Jinghan, Lichi Tai, Q.L. Zhou 194

Materials of Luminescence, Phosphors and Lasers

Spectroscopic Properties of Eu*+ Doped Fluorophosphate Glass K.Binnemans, CGorller-Walrand, J.Lucas, N.Duhamel, J.L.Adam 198

vm On General Relations between Coordination Polyhedra and the Spectroscopic Properties of Trivalent Rare Earth Ions K.Binnemans, C.Gorller-Walrand. 202

Rare Earth Luminescent Hourglass Inclusion(LHI). Part 2'.TtrVf:

3-Phenylpentane-2,4-Dionate Complex in K.2SO4 Crystal OsvaldoA. Serra, ledaL.V. Rosa,EduardoJ. Nassar, Paulo C. Cardoso 206

Origin of Color in Rare Earth Doped ZrSiO4 D. Huguenin, A. Seigneurin, P. Maestro 210 Luminescence Properties of Rare Earth Trifluorides Studied by Synchrotron Radiation Excitation N.Yu.Kirikova, WE. Klimenko, V.N. Makhov 214 Optical Properties of Liquid La, Ce, Pi and Nd Akashev L.A., Kononenko V.I 215 On the Further Intensification of Spectral-Luminescent Properties of the Complexes of with Fluorocontaining (i-Diketones S.B.Meshkova, Z.M.Topilova, D.V.Bolshoy 218

Nanometer Luminescent Material Y2SiO<;:Eu" Zhang Weiquan, Zhang Weiping, Xia Shangda, Yin Ming 222 + 4 Luminescence of Ce and Dy in BaYB<)O|rt Xiaohua Huang, Fengyu Guo, Fengmei Zhang 226 The Roles of the Ce3+ Ion in Some Phosphors Han Junxiang, Liu Yi, He Xiuchun 230 On the Structure and Some Properties of Rare Earth Borates

Ln26(BO3)O27+x(Ln=La, Ce and Nd) Jianhua Lin, Eberhard Schweda, Guo Fengyu, Mianzeng Su 234 Efficient Ultraviolet-Emitting Phosphor Based on Europium Activated Strontium Tetraborate Liu Yi, Han Jun-Xiang, He Xiu-Chun, -Fang, Liu Zhen-Dong, MuJing 238 Study on the Rare Earth Complexes by Photoacoustic Spectroscopy Mao Qinglu, Su Qingde, Wang Qin. Yang Yuetao, Zhao Guiwen 242 Spectral Studies on the Effect of Rare Earth Poly( Vinyl Chloride) Thermal Stabilizers 5M Qingde, Mao Junjun, Zhao Guiwen 246 The New Synthesis Method and Application of the Red CaS:Eu2+ Phosphor Mao Xiang-Hui, Wu Zhen-Guo, Lian Shi-Xun 250

IX Luminescence of Rare Faith Complexes with m-Metliyl and o-Clilorohenzoic Acids -jie, Ma Jian-fang, Yang Kui-yue. Pan Li-hua 254 Luminescence of Complexes of Tb(lll) ion with Aliphatic Binary Carboxylic Acid XuZhao, WenlianLi. Yi Yu 258 The Study of Green Phosphor for Projection Television Zhang Dong, Xioti Guangnan, Cai Qingrui 262 Tm^YAG Crystal Growth and Spectrum Characteristic Cao Yu-Hui, -Yun, Li Chang, Xu Bao-Jian, Huang Min-Fang 266 The Luminescence of Sm2+ in Barium Octaborate Qinghua Zeng, Zhiwu Pei, Qiang Su 270 2+ u Coexistence of the Eu and Eu in BaB8Ou Prepared in Air and Argon Qinghua Zeng, Zhiwu Pei, Qiang Su 274 + The Luminescence of Ce* in M| 98CeiNa(l(>iB2O';(M=Mg,Ca, Sr or Ba) Hong Quang-Yan Li You-Mo, C.Fouassier, F.Guillen, P.Hagenmuller 278 The Mechanism of Photostimulated Luminescence (PSL) in BaFCl:Eu2+ Wang Zhenjia, Xiong Guangnan, Teng Feng, Xu Xurong 282 Crystal Structure and Luminescence Properties of RE-Doped Zinc and Alkali-Earth Metal Pyromellitates Sun Ju-Tang, Yuan Liang-Jie, Ren Min 286 The Properties of Defects and Luminescent Properties Influenced by Defects in CaS:M(M=Ce'\ Dy". Cu"1) Phosphors Zhang Zhong-Yi, Su Qiang, Yu-Hua 290 Temperature-Dependence of Luminescence and Electroconductance in BaFBr:Eu2+ Crystal during Photostimulation Yi Dong, Mianzeng Su 294 On the f-f Transition of Eu2' Liu Ying-Liang, Li Yuan-Ying, Yang Yan-Sheng, Shi Chun-Shan 298

RE Applications in Glassess and Ceramics

Sintering and Properties of Monazite-Type CePO4 Yasuo Hikichi, Toshitaka Ota, Hitoshi Ohsato, Masaaki Miyamoto 301

Regularities of Phase Equilibria in the Systems BaS-Ln2S1 O.V. Andreev, N.N. Parshukov, A.V. Kertman 305

Crystallochemical Parameters of the Phases Ba,Er2S6 and Ba,Lu2Sfi Kuz'micheva G.M., Andreev O. V., Parshukov N.N, ReshetnikovaO.N., KertmanA. V. 310 Synthesis of La2.x-ySiOs:xEu*\ yBi^' by Sol-gel Method and A Study of Properties Li Bin, Zhao Chun-yan, -hong 314

Microstructure and Electrical Properties of Rare Earth Complex Oxides Ren Yu-fang 319 Influences of Yttria on the Mechanical Properties of ZrO2 (VA^O* Composites Wen Zhao-Yin, Lin Zu-Xiang, Gu Zhong-Hua, Fan Zeng-Zhao, ChenKun-Gang 324 Characteristics of Y2O3-Doped Bi-2212 Superconductor ZhangXi-Yan, Yang Kui-Sheng, Liu Jing-He 328 Nd and Cr Co-doped Mullite Glass-Ceramics DuanMu Qing-Duo, Su Chun-Hui, Qiu Guan-Ming 332 Effects of Y2O3 Doping on the PTC Characteristics of BaTiOi Ceramics Yang Kui-Sheng, Zhang Xi-Yan, Liu Jing-He 336 Study on the Preparation of Rare Earth Copper Glaze Zeng Feng, Zhang Renrong 340 Study on Preparation and Properties of AlF^-Based RE Fluoride Glass Jiang Kai, Zhang Xiuying, Niu Xinshu, Li Wuju, Yuan Qihua 344 Structure and Optical Properties of Al2Oi Transparent Ceramics Doped with Lanthanum Su Chun-Hui, DuanMu Qing-Duo, Yao Lan-Fang, Wang Yan 348

RE Applications in Catalyst

Catalytic Activities of Hydrogen Storage Alloys for Decomposition of Ether Hisao Imai, Motohiro Yamato, Takayasu Hosoya, Toshikazu Urano 352 RE Catalyst for Purification of Auto Exhaust and Purifying Technology Qin Shun-Cheng, Zhu Zi-Ying, Liu Ming-De, Zhou Yong-Quan 356 Synthesis, Structure and Catalytic Properties of Eu2-xSrx NiO4 Ma Futai, Ge Yuping, Lou Hui 361 The Oxidation Effect of the Rare-Earth Catalyst on the Waste Gas from Hydrazine Fuel Liu Chang-Lin 365 Catalysis and Surface Chemistry of Cerium Oxide Can Li, Qin Xin 369 Effects of Some Rare Earth Elements on the Stability of Platinum Reforming Catalyst

XI Luo Lai- Tao, Zhang Ning, Li Feng-) i 371 Studies on the Preparation of Pt-Sn-RE Reforming Catalysts Zhang Ning, Luo Lai- Tao, Li Feng-) i 375

The Study of SO//I e2O,-Dy2O, Solid Superacid for CatalyzingEsterification Luo Lai-Tao, Liu Zi-Li, Li Feng-Yi, Zhang Ning, Zhang Chao-Ying 379 The Effect of Lanthanum on Ni-Mo/y-AbO, Methanation Catalyst Luo Lai-Tao, Wang Min- Wei, Li Feng- Yi, Zhang Ning 383 The Application of Rare Earth Metal Oxide Modified Support Gu BoE, Wu Zhen-Xiao, Cui Hai-Yu, Ge Wen-Bo, Chan Min-Cen, Liu Gian-Bo, Liu Wei-Xia, Zhun Shu-Je, Chan-Chan-Hie, Xia Gou-Fu 387

Vol. 2

RE Applications in Steel, Cast and Nonferrous Metals

Studies on the Effect of Mischmetal Additions to the Cast AI-7Si-0.3MgAlloy and its Structure Property Correlations M.Ravi, U.T.S.Pillai, B.C.Pai, A.D.Damodaran. E.S. Dwarakadasa 391 Effect of Implanted Y on High Temperature Oxidation of Fe-20Cr-4AI Alloy T.Amano, M.Kishimoto, S.Nagata, K.Takahiro, S.Yamaguchi 395 High Temperature Oxidation of Fe-20Cr-4AI Alloys with Small Additions of Rare Earth Elements (Y, La, Gd) T. Amano, M.Shimizu 399 Interaction Rule between Rare Earth Elements and Low-Melting Point Elements in Iron-, Copper-, Aluminium-, Nickel-Base Liquid Solutions Du Ting, Sun Yunvong, Wu Yeming, Wang Longmei 403 Kinetics of Hydrogen Absorption in Hydrogen Storage Alloy Lin Qin, Li Rong, Chen Ning, Ye Wen 408 Study on Application of Rare Earth in OCTG Lin Qin, Chen Ning, Ye Wen, Yu Zongsen, Yao Tingjie, Liu Aisheng,Lu Xianli 413 Study on RE Addition Technology of Oil Used Pipe Steel

xu Study on RE Addition Technology of Oil Used Pipe Steel Gu Han-Xin, Wu Wei-Min, Chen Ning, Lin Qin, Ye Wen 418 Investigation of a New Rare Earth Duplex Stainless Steel Sun Wenshan, DingGuirong, Song A iying, Luo Mingwei, Wang Zhihui 422 Effects of Heavy Rare-Earth on Thermal Physical Parameters of High Heat- Resisting Hot -Work Tool Steels. Lu Deping, Chen Nanping , Lu lei, Peng Wenyi, Chen Leping, Lei Yu 426 The Effect of Rare Earth on Codeposition of Zn and Inert Particles Xu Xue zhen. Yuan Lian Yu, Yu Zong Sen, Zhang Chang Xing 430 The Rare Earth in Nodular Cast Iron Fang Kerning, Wang Min, Yu Zongsen 434 Effects of Rare Earth on Service Life of Ingot Mold ShengDa, Liu Jincheng, Gong Junbo 438 Research on the Chemical Reaction of RE and CC-Flux Yan Gaolin, Wan Entong, Tian Qin 442

RE Applications in Agriculture and Medicine

Accumulation, Distribution, and Migration of HICe and M7Nd in Soils of China Zhang Jizhen, Zhu Weimin, Zhang Ligan, Chen Zhuyi 447 Production and Physiological Effect of Rare Earth Complex Added to Growing Pig Diet Yu Huo Ming, Zeng Heng Xiu, Hu Xiang Ming, Li Si Yuan 452 Applied Studies on the Complexes of RE with Sulphur Containing

Organic Ligands II—Potence of the Et2NH2[La(S2CNEt2)4] Complex Preventing Disease and Promoving Vegetable Growth Zhu Chu-Yao, Zhang Wei-Guang, Li Hua-Yang, Fu De-Guang 456 Study on the Antitumor Effects of Mixed Light Rare Earth Compounds Yunjing Ji, Zonghui Wang, Shaohua Peng, Bai Xiao. Jianlin Li 460

XIII Effect of Rare Earth on infrastructure of Wheat and Peanut Cells Lao Xiu-Rong, Liu Chun-Sheng, Guo Yan-Kui, Yang Shou-Xiang, Ma Yu-zeng, Li Xu-Hua, Hao Lu-Xiang, Wang Wei-Mu 467 Benefit of Rare Earth in Yield Increasing of Peanut Liu Chun-Sheng, Lao Xiu-Rong, Yang Shou-Xiang, Li Xu-Hua, Ma Yu-zeng 470 Effect of LaClj and PrCh. on Photosynthetic O2 Emanation Rate and the Activity of Chloroplast Photosynthetic Phosphorylation Coupling Factor Pan Deng-kui, Guo chun-rong, Guo Dong-Sheng 474 Research of La3f Influence on the Activity of Superoxide Dismutase from Bovine Blood Pan Deng-kui, Liu Gui-lin, Guo Chun-rong, Cheng Gen-jie 478 Influence of Rare Earth on the Biological Effect and Quarlity of Coix lacryma-jobi L. Liu Etixia, Li Suyuan, Su Huimin 482 Influences of Intraperitoneal Injection of Rare Earth Compounds on the Activities of Antioxidant Enzymes and the Level of Lipid Peroxidation in Mice Livers Feng Zhi-Xiang, Zhang Shu-Gong, Yang Kui-Yue, Ni Jia-Zuan, MiaoJian, You Shu-Heng 486 Application of Nd-Fe-B Permanant Magnet to False-teeth Hao Zenqang, Pang Lidong, Ma Weiping, Wang Qianchen, Fong Yuxia, Wang Dafong 490

SECTION B RE CHEMISTRY

RE Chemistry hi Search of new Stable Organolanthanides Hydrides A. Dormond, D.Baudry , M. Visseaux, B. Lachot, C.Qian 494 Reactions of Lanthanide Alkoxides with Organic Molecules Containing Hydroxyl Group(s) Kamini Sharma, Ashok Solanki, Akshya Bhandari : 498 Phase Stability of BaLn2 Mn2 O7 (Ln=rare earth) N.Kamegashira, S.Umeno 501 Synthesis and Physico-chemical Studies of Binary Rare Earth Vanadates L. N. Komissarova, A. B. Bobyley, M. N. Boubentsova, G.Ya.Poushkina, F.M.Spiridonov 505

YIV Stability of Triple-helical Lanthanide Complexes with Benzimidazole Pyridines Ligands S. Petoud Jean-Claude G. Bunzli, Claude Piguet 508 Spectroscopy of Gadolinium Complexes with DTPA and DOTA N.V.Rusakova, S.V.Beltyukova, Yu.A.Popkov, Yu.V.Korovin, N.A.Nazarenko, S.M.Chesnov, E.A.Romanova 509 Chemical and Structural Aspects of Uranium Compounds Containing the Fragment "UL2"(L=HB(pz)3 and B(pz)4) M. Paula C. Campello, Angela Domingos, A. Pires de Matos, Isabel Santos 513 Optical Property of Langmuir-Blodgett Film From a New Ferrocenyl Derivative Containing Rare Earth Complex Anion Gao Lihua, Wang Kezhi, Huang Chunhiii, Zhao Xinsheng, Xia Xiaohua, Xu Jingmei, Li Tiankai 518 Langmuir-Blodgett Film of a Strongly Luminescent Europium Complex HDPEu(DBM)4 Wang Kezhi, Huang Chunhui, Gao Lihua, Song Jiaqing, Xu Guangxian, Xu Yu, Liu Yunqi, Zhu Daoben 522 Synthesis and X-Ray Crystal Structure of Heteronuclear Gadolinium and Yttrium Complex with Glycine [Gd^Y^GIyMH^KClO^^l^O Li Junran, Wang Xin, Jin Tianzhu, Yu Kaibei 526 Synthesis of Lanthanide Complexes with L-iso-Leucine, X-ray Crystal Strurure of [Nd2 (Ueu)4 (H2O8](CIO4)6 ZhaoJianjun, Yang Weichun, Wang Xiaoqing, Jin Tianzhu 530 Synthesis and Crystal Structure of Heteronuclear Lanthanum and Copper Complex with Diethylenetriaminepentaacetic Acid {[La4Cug (DTPA)6 (H2O)i6] 26H2O}n Yang Weichun , Gan Liangbing, Li Junran, Jin Tianzhu 534 Structures of Rare Earth Carboxylates MaJianfang, Ni Jiazuan 538 Crystal Structures of Lanthanum Complexes with Nitrobenzoic Acids MaJianfang, Jin Zhongsheng, Ni Jiazuan 541 Bioinorganic Chemistry of Rare Earth Niu Chunji, Zhang Shugong, Ni Jiazuan, Nie Yuxiu 545 Structural Characteristics of the Rare Earth Crown Ether Complex Mao Jianggao, Ni Jiazuan 549 The synthesis and crystal structure of [La(OH2)5(phen)2]Clv4H2O phen Ji Zhenping, Rohm D. Rogers 553 Hydrolysis of Mononucleotides by Lanthanides Zhu Bing, Li Xinmin, Zhao Daqing, Wu Yijie, Ni Jiazuan 557

XV Fast Cleavage of 3',5'-Cyclic Adenosine Monophosphate and 3'.5'-Cyclic Guanosine Monophosphate by Lanthanides Li Xinmin, Zhu Bing, Wu Yijie, Zhao Daqitig and Ni Jiazuan 561 Effect of Metal Ions on the Conformation of Phosphatidylcholine Bilayers by NMR Spectroscopy Zhao Daqing, Gao Xinfeng, Pei Fengkui. Ni Jiazuan, Hwang Fen, Gao Yuan 565 Organic Electroluminescent Device Having Terbium Complex as an Emitter Sun Gang, Zhao Yu, Yu Yi, Li Wenlian Zhong Guozhu, Yu Jiaqi 569 Fluorescence Spectroscopy Studies on the Action of Rare Earths with Bovine Serum Albumin in Multimolecular System Wang Zhiqiang, Zhang Shugong, Liu Qimin, Ni Jiazan 573 Substituent Effect on Structure and Spectra of Rare Earth Benzoate Complexes with Nitrogen-containing Ligands Jin Linpei, Zheng Xiaomei, Lu Shangxi, Wang Mingzhao 577 Mossbauer and XPS Studies on Sro.r,Eiio4TiOnv Synthesized by High Pressure and Temperature Li Lipitig, Wei Quan, Yao Zhiguo, . Hang Chuanbin, Su Wenhui 581 The Structural Study on Lanthanide Complex with Glycine in Different pH by Induced Shift Method Lu Fei, Yu Hnaming, Liu Qingliang, Guo Guihua 585 The CD Spectroscopy Studies of Secondary Structure of Anticoagulation Factor in the Venom of Agkistrodon Acutus and the Effect of Metal Ions on the Structure Yu Huaming, Xu Xiaolong, Wang Chun, Lu Fei, Zhang Zude, Liu Qingliang 589 Synthesis and Luminescence Properties of Eu" -Activated Sodium Isopolytungstate Yang Shuijin, Zhang Weihua, Sun Juiang, Qin Zibin 594 Spectroscopy and Thermal Decomposition Reaction of Tb+? -Doped Zinc Benzoate Sun Jutang, RenMin, Song Li. Zhang Keli 598 Rare-Earth Rhodamine Complexes Doped Polyethylene Film Sun Ju-Tang, Zhang Ke-Li, Wang Qing-Ye, XiMei-Yun, Yu You-Zu, Du Xiu-Zhen 602 Effect Factors for Fluorescence Properties of RE(III) with Three Indole Derived Acetylacetone in Solution H.Y Lei, Y.S. Yang, Y. Jin, J.X. Meng 604 Complexation and Electronic Spectra of Neodymium(NI)-Amino Acid- 1,10-Phenanthroline Systems in Aqueous Solution Yang Wu, Gao Jinzhang, Kang Jingwan, Yang Weidong 608

XVI Preparation of Ternary Complexes of Eu(lll) with (VDiketones and Diphenylguanidine and Structural Characteristic By Low-Temperature Fluorescence Spectra Yang Wu, Gao Jinzhang, Kang Jingwan, Li C "unxiong 613 Study on Covalent Bonding of 4f Orbital and Lingand Yang Wu, Gao Jinzhang, Kang Jingwan, Yang weidong 617 The Effect of the Solvent on the Oscillator Strengths of Neodytnium Nitrate Complex with Crown Ethers Wu Dengguo, Liu Shichang, Sun Yuanhong 621 Synthesis and Spectra Characterization of Rare Earth Complexes with Ferrocenylmethyl-n-butylsulfoxide Sun Yuan-Hong, Liu Zhi-Liang, Liu Jing-Xin 625 Phase Equilibrium for the Iodide of Samarium and Dysprosium with Thiourea or Urotropine Hydriodide in Aqueous Solution Zhang Chen-Ding, Wei Xiong-Hui, Dong Dian-Quan, Zhang Tong, Liu Jin-Rong, Wang Hong-Wang 629 Water-gas-shift Reaction on Cerium Oxide Studied by in situ FT-IR Hu Yanpin, Jin Henfang 633 Interaction of the Iodide of Rare Earths with Thiourea or Urotropine Iodide in Aqueous Solution and Properties of Resulting Compounds Wang Li, Rook N.S., Loginova G.P., Alikberova L. Yu, Stebin B.D. 637 Study on the Lanthanum Perchlorate Complexes with Poly (Oxethylene) Derivatives Li Yongxiu, Liu Guihua, Gu Ziying, Zhang (^haoying 641 Modification of Montmorillonite Catalysts by Rare Earth Ions Li Yongxiu, Hu Pinggui, He Xiaobing, Gu Ziying, Zhang Chaoying, Chen Zhaopitig, Qian Chengyang, Zhang Wangmei, Zhou Shijun 645 Preparation and Properties of Solid Complexes of Heavy Rare Earth with 3-Phenyl-5-(furyl-2O )Pyrazoline Dithioformate Zhang Weiguang, Tang Ning, Tan Minyu 649 Survey and Development of Solid State Synthesis and Luminescent Properties of RE-Activated Tungstates Yang Shuijin, Sun Jutang, Qin Zibin 653 Liquid-Liquid Extraction of Rare Earths(Ill) from Acidic Sulfate Solutions with Cyanex 302 Xue Lizheng, Li Deqian, Luo Aiqing, Wang Chun and Yuan Meng 657

XVII Analytical Chemistry

Comparison of Nebulizer Performance in Determination of Rare Earth Elements by ICP-AES Shinichiro Murachi, Shu-Xiu Zhang, Hideki Fu/ii, Katsuaki Kimura,Akira I to 661 Application of a Partial Least-Squares Regression Model for Spectral Correction in Inductively Coupled Plasma-Mass Spectrometry Analysis of Rare Earth Elements in Environmental Samples W.Zhu and Ed WB.de Leer, G.J.F.R.AIaerts, M. Kennedy, P. Kelderman 665 Determination of Trace Rare-Earth Elements of Adult Human Viscera by Inductively Coupled Plasma Mass Spectrometry Wang Naifen, Wang Xingfang, Chen Qing, Kang Zhigang, Zhang Jing 673 Fluorescence Determination of Terbium with Trimesic Acid Gao Jin-Zhang, Zhao Guo-Hu, Kang Jing- Wan 677 Studies on Polarographic Adsorptive Wave of the System of the Rare Earth(NI)-Cbpper(H)-m-Trifluomethyl Chlorophosphonazo Jingwan Kang, Miao Chen, Jinzhang Gao 681 Application of Rank Annihilation Factor Analysis to Quantitative Analysis ofDyandYinHPLC Shao Xueguang, Liu Wei, Zhao Guiwen 686 Studies on the P-Type Chrbmegenic Reaction of I anthanides with p-Bromochloroarsenazo Gao Jin-Zhang, Zha Fei, Chen Htti, Kang Jing- Wan 690 Determination of Gaseous Elements in Rare-Earth Metals WangGuo-Man 694 On-line Method for Measuring RE Content in the Extraction Process Che Yuzhen 698 Synergistic Extraction of Some Rare Earth Ions by l-Phenyl-3-Methyl-4- Benzoyl-5-Pyrazolone and Trioctylphosphine Oxide in Paraffin Wax Jinzhang Gao, Haiyan Fan, Bo Peng, Jingwan Kang 702 Determination of Carbon in Metal Lanthanum by High Frequency-infrared Method Han Jun-Juan 706

XVIII SECTION C RESOURCES AND METALLURGY

RE Separation, Extrection Chemistry, Mathematical Modeling. Hydrometallurgy and Equippment

Extraction of Rare Earth Elements from Nitric Acid Solutions by Di-(2-Ethyl Hexyl)-Phosphoric Acid LS.El-Yamani, E.N. AbdEl-Messieh 710

Solubility of Rare Earth Phosphates in the Systems LnPO4 -H3PO4 H2O and LnPO4 -Ca3(PO4 )2 -H^PO4-H2O Under Non-equilibrium Conditions A.P.Bobylev, G.V.Zimina, L.N.Komissarova, T.LKouzina, G.Ya Poushkina. T.l.Slivko 714 Preparation of Cerium Concentrate for Glass Additives from Chinese Bastnasite Joon Soo Kim, Sung Don Kim, Chul Joo Kim, Hi Sun Lee 718 Reductive Extraction of Bastnasite Ore Baked with Sodium Carbonate Wang Shumao, Zheng Wei, Fan Yubin, Xu Yengnan 728 A New Process for Rare Earths Separation in HDEHP-HC1 and HEH(EH)P-HC1 System Hao Xian-Ku, Zhang Li-Ping, WangQi 731 Study on Extraction Behavior of Rare Earth Using the Mathematical Models in the System of (Sm-GdXClrHCl-HEH(EHP)-isoparaffin Ying Weijuan, Huang Wenmei, Ronaldo Luiz C. Santos, Clelio Thaumaturgo 735 Studies on Refining Yb2Oi by Electrolyfie Reduction-Alkaline Process Liu Jian-gang, Liu Zhao-gang, Song Hong-fang, Zheng Zhong, 740 The Extraction Kinetics Study of HFH/EHP-Er(III)-HCl with a New Constant Interfactal Cell Zheng Zhong, Li De-Qian 744 Extraction Kinetic Study on Gadolinium with HEH(EHP) Ya Wen-Hou, Huang Xue Ning, Cui Da-Li, Wang Nai-ying 748 Study on Preparation of Nd2Oi Fine Powder by Ammoniated Oxalic Acid Precipitation Method SunJun, Zhang Shun-Li, Yang Gui-Lin 753

XIX The Study of Using Cation Exchange Fiber to Prepare High Purity Er2O, Li Mei, Ye Zuguang, Zhang Ruixiang. Zhang Yongchao, Bai Yan, Ma li 757 Study on Extraction Machanism of Ce(IV) By 2-Fthylhexyl Phosphonic Acid Mono-2-Ethyl hexyl Ester in Nitric Acid Zhou Jing-Min, Wang Nai-Bin, Li Gui-Zhu 761 Study of Separated Rare Earth with a New Mixer Settler Extractor Zhong Chenghua 766 Electrolytic Reduction of Ce(IV) to Ce(IH) in an Emulsion Gao Wei, Liu Jian-gang, Zhang Chun-Rui, Wang Xiu-Yan, Ji Hong-Jun 770 Extraction Separation of Lu(III) from Zr(IV), Ti(IV), Th(IV), FelHI) and Mechanism of Zr(IV) by Bis(2,4,4-trimethylpentyl)phosphinic Acid Wang Chun, Li Deqian 774

Preparation of Metals, Alloys and RE Compounds

Electrodeposition of Neodymium-cerium Alloy from Their Oxides in Molten Salts T.Shimada, M.Nishida, Y.Shimizu, M.Miyake 778 The Influence of Mixed Ligand Complex Formation on the Separation of Volatile lathanide Dipivaloylmethanates by Vacuum Sublimation N.Kuzmina, Liu Fenghua, Zoan Anh Tu, L.Martynenko, G.Mazo 782 Influence of RE Additions on the Synthesis Mechanism of Silicon Nitride Obtained from Silica Reduction by Carbon in Nitrogen Atmosphere Li Wen-chao, Zhuang You-qing, Zhong Xiang-chuong, SunGui-ru 786 Electrical Conductivity Study on the Molten Salt Electrolysis of La-Nd Rich Alloys Li Xue-shun, Wei Xu-jun, Xu Xiu-zhi, Feng Fa-lun 790 Phase Relations, Compounds and Electrical Properties in the System BaO-Gd2O3-TiO2 Zheng Chao-Gui, Wang Shuang-Yang 794 The Behaviour of Magnesium in Vacuum Distillation of Nd-Mg Alloy Li Zuoshun, Yang Yaoshan 798 Application of the Quasi-parabolic and Quasi-paraboloidal Regulation of Intermediate Compounds in RE Binary and Ternary System Sun Gui-ru, Li Wen-chao, Chou Kna-chih, Li Xing-kang, WangJian 802

XX RE Calphad WangJixin 806 Thermodynamic Estimation of Tb-Dy-Fe Phase Diagram WangJixin 810 Phase Diagram and Structure of Cs Sm(i.X) Ybx h systems Yuanfeng Xie, Shihua Wang, Xinhua Zhao 814 Thermodynamic Study on the Sm-Ba-Cu-O System Xing Xianran, Qiao Zhiyu, Wei Soukun 818 The Application of Lanthanum Sensor in the Study on the Lanthanum Activity in Carbon Saturated Iron Liquid Solution and Its Solidified Process Wang Ping, Wang Chang-Zhen, Xu Xiu-Guang, Liu Liang 822

Geochemistry and Ore Dressing

Selective Accumulation of Rare Earth Elements by Oligotrophic Bacteria Keiichi Kawai, Manjiro Kamijo, Tohru Suzuki, KazuhiroTakamizawa, Hiroyuki Horitsu, Hironobu Hirose 826 A Study on Recovery of Rare Earth Elements from Refractory Ores H. Tateiwa, M. Hashimoto, Y. Sugama, N.Matsumoto, H. Kubota 830 Synchisite-New Resources of the Rare Earths Haumdas Ashim., Burmaa. G, Bayar.B., Myagmarjav.B., RakaevA 834 Content and Cathodoluminescence of RE Minerals and Their Technological Properties Zamorianskaya M.V 838 Cathodoluminescence as a New Method of Defect Control in Oxide and Fluoride Crystals Zamorianskaya M.V. 842 The Geological Metallogenic Age and Spacial Distribution of Chinese Ree and Their Genetic Type of Ore Deposits Zhang Peishan, Yang Zhuming 846 RE Mineralization and Prospect in Western Mianning Minning of Sichuan China Pu GuangPing, Yang Zhengxi 850 Study on Exchange Mechanism of RE of Elution Deposit Ore in Weathering Crust He Lunyan, Jiao Xiaoyan, Zhou Xinmu, Wang Sinan, Li Nanping, Wen Zhiyu 855

XXI Study on Preparation Technique of Rare Earth Minerals from Acid Leach Dregs Che Liping, Hou Wei 859

Environmental Protection

Harmful Waste Gas Treatment in Rare Earth Production Lin He-Cheng 863 An Epidemiological Investigation on Abnormal Pregnant Result of Female Workers in Rare Earth Producing Factories Zhao Guang-Li, Tianjun, Huang Xiang-Min 868 Study on Bastnasite Selective Flotation with H894 Che Li-Ping 871 The Specific Activity Level and Hygienic Evaluation of U. Th and Ra in Agriculture and Forage in which Rare Earths Are Used Sun Bao-Chen, Cong Ri-Hui, Shen Bao-Ming, Li Ye 875

Male Reproductive Toxicity of Yttrium Chloride on Rats After Oral Administration Zhang Hua, Li Ying -Zeng, Bai Jun-Hai, Ren Shu-Ying, Shang Lan-Qin, Zhang Jin-Xia, Lu Guo-Cheng, Shen Zi-Wei, Song Chuan-lin , Chang Zhi-Cheng, Gao Hong-Qi 879 Antimutagenicity and Anticarcinogenicity of Rare Earth Elements in Vitro Mingzhen Cui, Bai Xiao, Qingsheng Lu, Li Cai, Hua Yang 883

The others

Rare Earth 1995 Recent Evolution of the Application Markets J.M.Tourre 887 Backgroud and Prospect of Inner Mongolia's Rare Earth Industry Li Peizhang 891 Rare earth Metal Prices in the United States: from the late 1950s through 1994 James B. Hedrick 894 Vapor Pressures and Thermodynamic Properties of the Rare Earth Disulfides Shilkina T.Yu, Vasilyeva I.G. 895

XXII New Method of Preparation of RE, Yttrium and Scandium Metals and Their Compounds A.A.Kamarzin, V.V.Sokolov, L.N.I rushnikova, M.V.Savel'eva, Yu.M.Zelenin, L.I.Osadchaja, Yu.A.Stonoga 896 Phase Equilibria, Synthesis and Properties Some RE Sulfides Gibner Ja.L, Belyeva E.I., Vasilyeva I.G 897

Core-level Spectroscopy of Rare-Earth Compounds with Unusual Valence States Z. Hu, G. Kaindl, G. Meyer, B.G Muller, R. Hoppe 898 Recovery of Rare Earths From Phosphate Rock H.Richter ,....899 MMAJ'S Rare Earth R & D Project N.Mastumoto, H.Kubota, K.ltou, H.TaMwa, N.Komadam K.Toma, K.Sakurai, T.Onoue, T.Shimizu 900 Rare Earth-Tin Phase Diagrams M.V. Bulanova 903 The Research of Technological Schemes of Rare earth Elements Separation Based on Mathematical Modeling Bogatov K. B., Piartman A. K., Puzikov E. G, Chekmarev A. M 911 F-d heterobimetallic hydrides D. Baudry, A.Dormond, M. Visseaux, P. Desmurs F.NiefL. Richard. 912

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