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

Vol.1

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

Xu Guangxian Member of the Chinese Academy of Sciences Prof, of Vice President of CSRE

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

Yu Zongsen Prof, of University of Science and Technology Beijing Vice President and General Secretary of CSRE

Yan 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 LeRoyEyring 1 -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-ya Adachi, Ken-ichi Machida, Kuniaki Murase 12 The Separation Processes of Main Minerals in China Yan Chunhua, Liao Chunsheng, Jianfang, JiaJiangtao, Yawen, Li Biaoguo, Guangxian 16

SECTION A HE NEW MATERIALS AND RE APPLICATIONS

New Materials

Mechanochemical Effects in the System Ln2O3-Ln(OH)3 (-H2OXLn=La, Dimitr Todorovsky, A tanas. Terziev 24 New Inorganic Materials Containing Rare Earths and Tetrahedral Anions TO4 Petr Melnikov, Lydia, Komissarova 28 Anisotropy of the g-Factor and a Procedure for its Determination: Application to ErNis N.A.de Oliveira, A.Caldas, P.J.von Ranke, LPalermo 31 Simulation of the Spectroscopic and Magnetic Properties of Trivalent Rare Earth Ions in Rare Earth Oxyfluoride Matrices Jorma Holsa, Eija Kestisa, Pierre Porcher 35 Optical Properties and Energy Level Simulation of RE3+ -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 S. Tsunekawa, T.Nakada, RNishitani A.Kasuya 55 Complex Aluminates and Gallates of Strontium and Rare Earth Elements G. V.Zimina, L.N.Komissarova, I.N.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 Y.J. Bi, D.Fort, J.S.Abell 58

Melt-Processed YBa2Cu3O7-8 Thick Films with Additional Phases Y.J. 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, WenshanZhan 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)i 95 Alloys Zhang Hongping, Du Ting, Kuang Mahua 80 Thermodynamics and Equilibrium Dissociation Pressures in the System SraH2-SmH, Longmei Wang, Zheng Li, E.Kaldis 86 The Effect of RE on Structure & Property of Zn-Al Superplastic Material ZhouTianrui, HuShifei 90

xn Magneto-Optical Properties and Stability of GdTbFeCo Thin Films Prepared by RF-magnetron Sputtering QiuJufeng 94 Study of Rare Earth Stabilized Zirconia Ultrafine Powders Wei Kun, Shi Yan, Zou Xinmu, He Lunpin 98 Study on Some Properties of Lai.x Srx CoO3 and Its Application in Sealed-off CO2 Lasers Liu Jiang, He Lanying, ChenGuangyu, 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 Xiangting, Yang Kuisheng, Zhang Hongbo, Liu Jinghe, Hong Guangyan, Yu Decai Ill Study on Electrocatalytic Property of Anode Coating with Rare Earth Compounds LinJiyun, Wang Yunge, ChenKangning 115 Study on Rare Earth Solid Electrolytes WangWenji, ChenJingxi 119 Synthesis and Electrical Conduction Characteristics of LaCrO3 Ceramics TangZilong, ZhangZhongtai, QiJianquan, LiYing 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, WangDejun 127 Rare Earth Stabilizer of Pohyvinyl Chloride (PVC) Zhang Yongxiang, Liu Shengtai, Yin Chengxiang 131 Effects of RE on Superplasticity of Zn-5A1 Alloys Hu Xiulian, Li Shichun, Yang Chunsong 135

Magnetic Materials

Comparison of Corrosion Behaviour of RE-based Permanent Magnets HenrykBala, 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 Hydrogen Containing MgCu2-Type Compounds Mushnikov N. V., Zajkov N. K., Gaviko V.S., Korolyov A.V.,YermakovA.Ye 147

xm Two Dimensional and Three Dimensional SmFe Random Magnets XX. Zhang, J. Tejada 151 Exponential Relaxation and Quantum Tunneling of Antiferromagnetic Domain Walls in TbFeO3 Single Crystal J. Tejada, XX 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 Magnetostrictive Rare Earth-Iron Compounds Y.J. Bi, J.S.Abell 166 Gas-treatment and Magnetic Domain Observation of Sm2Fen Alloys Jiang Long, Zhu Jinghan, Yang Weidong, Liu Guozheng, Naoki Matsumoto, Hiroshi Kubota, Kenji Ohmori 170 Study on the Pressing Nhriding Process of SnfcFenN* Compounds WuJianmin, CuiLiya, Zhao Weihong,TaiLichi 174 Magnetic Properties of Nd-Fe-Co-B Rapidly Quenched Alloys ZhuJinhan 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 Fe^and NdFeO3 Materials Shengfeng Liu, Xiaoliang Qian, Qiang Li, JianhuaLin, MianzengSu 187 Magnetism in RSrMnO HouBihui, YangBinxing, YiSu, LinPeiyan, Fu Yilu 191 Magnetic properties and Magnetostriction in TbosDyosCFeogMnxAJoi-xJiw Compounds GaoYouhui, Zhu Jinghan, Lichi Tai, Q.L Zhou 194

Materials of Luminescence. Phosnhors and Lasers

Spectroscopic Properties of Eu3+ Doped Fluorophosphate Glass K.Binnemans, CGorller-Walrand, J.Lucas, N.Duhamel, J.LAdam 198

xnr 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 21Tb3+: 3-Phenylpentane-2,4-Dionate Complex in K2SO4 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 Trifhiorides Studied by Synchrotron Radiation Excitation N.Yu.Kirikova, V.E. Klimenko, V.N. Makhov 214 Optical Properties of Liquid La, Ce, Pr and Nd Akashev L.A., Kononenko V.I. 215 On the Further Intensification of Spectral-Luminescent Properties of the Complexes of with Fluorocontaining |3-Diketones S.B.Meshkova, Z.M.Topilova, D.V.Bolshoy 218 3+ Nanometer Luminescent Material Y2Si0s:Eu Zhang Weiquan, Zhang Weiping, Xia Shangda, Yin Ming. 222 3+ 3+ Luminescence of Ce and Dy in BaYB9O|6 Xiaohua Huang, Fengyu Guo, Fengmei Zhang. 226 The Roles of the Ce3+ Ion in Some Phosphors HanJunxiang, Liu Yi, HeXiuchun 230 On the Structure and Some Properties of Rare Earth Borates ijfceKBOaJO^+xfLn^a, 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 Su Qingde, MaoJunjun, Zhao Guiwen 246 The New Synthesis Method and Application of the Red CaS^u2* Phosphor Mao Xiang-Hui, Wu Zhen-Guo, Lian Shi-Xun 250

xv Luminescence of Rare Earth Complexes with m-Methyl and o-Chlorobenzoic Acids -jie, MaJian-fang, Yang Kui-yue, Pan Li-hua 254 Luminescence of Complexes of Tb(III) ion with Aliphatic Binary Carboxylic Acid XuZhao, WenlianLi, Yi Yu 258 The Study of Green Phosphor for Projection Television Zhang Dong, Xion Guangnan, Cai Qingrui 262 Tm3+: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, ZhiwuPei, QiangSu 270 2+ 3+ Coexistence of the Eu and Eu in BaB8Oi3 Prepared in Air and Argon Qinghua Zeng, ZhiwuPei, QiangSu 274 3+ The Luminescence of Ce in Mt 98CeooiNaooiB205(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+ WangZhenjia, XiongGuangnan, TengFeng, XuXurong. 282 Crystal Structure and Luminescence Properties of RE-Doped Zinc and Alkali-Earth Metal Pyromellitates SunJu-Tang, Yuan Liang-Jie, RenMin 286 The Properties of Defects and Luminescent Properties Influenced by Defects in CaS:M(M=Ce3+, Dy3+, Cu+) 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-Ln2S3 O.V. Andreev, N.N. Parshukov, A.V. Kertman 305 Crystallochemical Parameters of the Phases Ba3Er2S6 and Ba3Lu2S6 Kuz'micheva G.M., Andreev O. V, Parshukov N.N.,

XVI ReshetnikovaO.N., KertmanA.V. 310 3+ 3+ Synthesis of La2-x.ySi05: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 RenYu-fang 319 Influences of Yttria on the Mechanical Properties of ZrO2 P"A12O3 Composites Wen Zhao-Yin, Lin Zu-Xiang, Gu Zhong-Hua, Fan Zeng-Zhao, Chen Kun-Gang 324 Characteristics of Y2O3-Doped Bi-2212 Superconductor Zhang Xi-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 BaTiO3 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 A1F3-Based RE Fluoride Glass Jiang Kai, Zhang Xiuying, Niu Xinshu, Li Wuju, Yuan Qihua 344 Structure and Optical Properties of A12O3 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 Hisaolmai, Motohiro Yamato, Takayasu Hosoya, Toshikazu Urano 352 RE Catalyst for Purification of Auto Exhaust and Purifying Technology Qin Shun-Cheng, ZhuZi-Ying, LiuMing-De, Zhou Yong-Quan 356 Synthesis, Structure and Catalytic Properties of Eu2-xSrx NiO4 MaFutai, Ge Yuping, LouHui 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, QinXin 369 Effects of Some Rare Earth Elements on the Stability of Platinum Reforming Catalyst

xvn LuoLai-Tao, Zhang Ning, Li Feng-Yi 371 Studies on the Preparation of Pt-Sn-RE Reforming Catalysts Zhang Ning, Luo Lai-Tao, Li Feng-Yi 375

2 The Study of SO4 7Fe2O3-Dy2O3 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-Al2O3 Methanation Catalyst LuoLai-Tao, WangMin-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 Al-7Si-0.3MgAlloy . and its Structure Property Correlations M.Ravi, U.T.S.Pillai, B.C.Pai, A.D.Damodaran, ES.Dwarakadasa 391 Effect of Implanted Y on High Temperature Oxidation of Fe-20Cr-4Al Alloy T.Amano, M.Kishimoto, S.Nagata, K. Takahiro, S.Yamaguchi 395 High Temperature Oxidation of Fe-20Cr-4Al 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 Yunyong, Wu Yeming, WangLongmei 403 Kinetics of Hydrogen Absorption in Hydrogen Storage Alloy LinQin, Li Rang, 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

xvm 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 GuHan-Xin, Wu Wei-Min, Chen Ning, Lin Qin, Ye Wen 418 Investigation of a New Rare Earth Duplex Stainless Steel Sun Wenshan, DingGuirong, SongAiying, 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, WangMin, Yu Zongsen 434 Effects of Rare Earth on Service Life of Ingot Mold ShengDa, Liu Jincheng, GongJunbo 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 141Ce and 147Nd in Soils of China ZhangJizhen, Zhu Weimin, ZhangLigan, ChenZhuyi 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%e Et2NH2[La(S2CNEt2)4] Complex Preventing Disease and Promoving Vegetable Growth Zhu Chu-Yao, Zhang Wei-Guang, Li Hua-Yang, FuDe-Guang. 456 Study on the Antitumor Effects of Mixed Light Rare Earth Compounds YunjingJi, Zonghui Wang, ShaohuaPeng, Bai Xiao, Jianlin Li 460

XIX Effect of Rare Earth on Ultrastructure of Wheat and Peanut Cells Lao Xiu-Rong, Liu Chun-Sheng, Guo Yan-Kui, Yang Shou-Xiang, Ma Yu-zeng, Li Xu-Hua, HaoLu-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 LaCl3 and PrCl3 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 La3+ Influence on the Activity of Superoxide Dismutase from Bovine Blood Pan Deng-kui, LiuGui-lin, Guo Chun-rong, Cheng Gen-jie 478 Influence of Rare Earth on the Biological Effect and Quarhty of Coix lacryma-jobi L. Liu Enxia, 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, WangDafong 490

SECTION B RE CHEMISTRY

RE Chemistry

In 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 Bhandarit. 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.Bobylev, M.N.Boubentsova, G.Ya.Poushkina, F.M.Spiridonov 505

XX 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 Chunhui, Zhao Xinsheng, XiaXiaohua, XuJingmei, Li Tiankai 518 Langmuir-Blodgett Film of a Strongly Luminescent Europium Complex HDPEu(DBM)4 Wang Kezhi, Huang Chunhui, Gao Lihua, SongJiaqing, Xu Guangxian, Xu Yu, Liu Yunqi, Zhu Daoben 522 Synthesis and X-Ray Crystal Structure of Heteronuclear Gadolinium and Yttrium Complex with Gh/cine [Gd4/3Y2/3(Gly)6(H2O)4](ClO4)6'5H2O LiJunran, WangXin, Jin Tianzhu, YuKaibei 526 Synthesis of Lanthanide Complexes with L-iso-Leucine, X-ray Crystal Strurure of [Nd2 (Ileu)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 {[La4Cu9 (DTPA)e (H2O)i6] 26H2O}n Yang Weichun, Gan Liangbing, LiJunran, Jin Tianzhu 534 Structures of Rare Earth Carboxylates MaJianfang, NiJiazuan 538 Crystal Structures of Lanthanum Complexes with Nitrobenzoic Acids MaJianfang, Jin Zhongsheng, NiJiazuan 541 Bioinorganic Chemistry of Rare Earth NiuChunji, ZhangShugong, NiJiazuan, 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]Cl34H2O phen Ji Zhenping, Robin D. Rogers '. 553 Hydrolysis of Mononucleotides by Lanthanides ZhuBing, Li Xinmin, Zhao Daqing, Wu Yijie, NiJiazuan 557

XXI Fast Cleavage of 3',5-Cyclic Adenosine Monophosphate and 3',5'-Cyclic Guanosine Monophosphate by Lanthanides LiXinmin, ZhuBing, Wu Yijie, ZhaoDaqingand NiJiazuan 561 Effect of Metal Ions on the Conformation of Phosphatidylcholine Bilayers by NMR Spectroscopy Zhao Daqing, Gao Xinfeng, Pei Fengkui, NiJiazuan, Hwang Fen, Gao Yuan 565 Organic Electroluminescent Device Having Terbium Complex as an Emitter Sun Gang, Zhao Yu, Yu Yi, Li Wenlian Zhong Guozhu, YuJiaqi 560 Fluorescence Spectroscopy Studies on the Action of Rare Earths with Bovine Serum Albumin in Multimolecular System WangZhiqiang, ZhangShugong, LiuQimin, NiJiazan 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 Sr0 6Eu0 4TiO3+v Synthesized by High Pressure and Temperature Li Liping, Wei Quan, Yao Zhiguo, Jiang Chuanbin, Su Wenhui 581 The Structural Study on Lanthanide Complex with Glycine in Different pH by Induced Shift Method LuFei, Yu Huaming, Liu Qingliang, GuoGuihua 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 Eu3+ -Activated Sodium Isopolytungstate YangShuijin, Zhang Weihua, SunJutang, QinZibin 594 Spectroscopy and Thermal Decomposition Reaction of Tb+1 -Doped Zinc Benzoate SunJutang, 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(III)-Amino Acid- 1,10-Phenanthroline Systems in Aqueous Solution Yang Wu, GaoJinzhang, Kang Jingwan, Yang Weidong 608

xxn Preparation of Ternary Complexes of Eu(Hl) with P-Diketones and Diphenylguanidine and Structural Characteristic By Low-Temperature Fluorescence Spectra Yang Wu, Gao Jinzhang, Kang Jingwan, Li Cunxiong 613 Study on Covalent Bonding of 4f Orbital and Lingand Yang Wu, Gao Jinzhang, Kang Jingwan, Yangweidong 617 The Effect of the Solvent on the Oscillator Strengths of Neodymium Nitrate Complex with Crown Ethers Wu Dengguo, Liu Shichang, Sun Yuanhong 621 Synthesis and Spectra Characterization of Rare Earth Complexes with Ferrocenyhnethyl-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, RookN.S., Loginova G.P., Alikberova L.Yu, StebinB.D. 637 Study on the Lanthanum Perchlorate Complexes with Poly (Oxethylene) Derivatives Li Yongxiu, Liu Guihua, GuZiying, Zhang Chaoying. 641 Modification of Montmorillonite Catalysts by Rare Earth Ions Li Yongxiu, Hu Pinggui, He Xiaobing, Gu Ziying, Zhang Chaoying, Chen Zhaoping, Qian Chengyang, Zhang Wangmei, Zhou Shijun 645 Preparation and Properties of Solid Complexes of Heavy Rare Earth with 3-Phenyl-5-(furyl-20 )Pyrazoline Dithioformate Zhang Weiguang, Tang Ning, TanMinyu 649 Survey and Development of Solid State Synthesis and Luminescent Properties of RE-Activated Tungstates Yang Shuijin, SunJutang, Qin Zibin 653 Liquid-Liquid Extraction of Rare Earths(III) from Acidic Sulfate Solutions with Cyanex 302 Xue Lizheng, Li Deqian, Luo Aiqing, Wang Chun and Yuan Meng 657

xxm Analytical Chemistry

Comparison of Nebulizer Performance in Determination of Rare Earth Elements by ICP-AES Shinichiro Murachi, Shu-Xiu Zhang, Hideki Fujii, Katsuaki Kimura,Akira Ito 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 W.B.de Leer, G.J.FR.A/aerts, M.Kennedy, P.Kelderman 665 Determination of Trace Rare-Earth Elements of Adult Human Viscera by Inductively Coupled Plasma Mass Spectrometry Wang Naif en, Wang Xingfang, Chen Qing, Kang Zhigang, Zhang Jing. 673 Fluorescence Determination of Terbium with Trimesic Acid Gao Jin-Zhang, Zhao Guo-Hu, Kangjing-Wan 677 Studies on Polarographic Adsorptive Wave of the System of the Rare Earth(III)-Copper(n)-m-Trifluomethyl Chlorophosphonazo Jingwan Kang, MiaoChen, Jinzhang Gao 681 Application of Rank Annihilation Factor Analysis to Quantitative Analysis of Dy and Y in HPLC Shao Xueguang, Liu Wei, Zhao Guiwen 686 Studies on the P-Type Chromegenic Reaction of Lanthanides with p-Bromochloroarsenazo Gao Jin-Zhang, ZhaFei, ChenHui, KangJing-Wan 690 Determination of Gaseous Elements in Rare-Earth Metals WangGuo-Man 694 On-line Method for Measuring RE Content in the Extraction Process CheYuzhen 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, HaiyanFan, Bo Peng, Jingwan Kang 702 Determination of Carbon in Metal Lanthanum by High Frequency-infrared Method HanJun-Juan 706

xxrv SECTION C RESOURCES AND METALLURGY

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

Extraction of Rare Earth Elements fromNitri c Acid Solutions by Di-(2-Ethyl Hexyl)-Phosphoric Acid I.S.El-Yamani, EN. AbdEl-Messieh 710

Solubility of Rare Earth Phosphates in the Systems LnPO4 -H3PO4 H2O and LnPO4 -Ca3(PO4 )2 -H3PO4-H2O Under Non-equilibrium Conditions A.P.Bobylev, G. V.Zimina, L.N.Komissarova, T.I.Kouzina, G.YaPoushkina, T.I.Slivko 714 Preparation of Cerium Concentrate for Glass Additives from Chinese Bastnasite JoonSooKim, Sung Don Kim, ChulJooKim, 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-GdXCl3-HCl-HEH(EHP)-isoparaffin Ying Weijuan, Huang Wenmei, Ronaldo Luiz C. Santos, Clelio Thaumaturgo 735 Studies on Refining Yb2O3 by Electrolyfie Reduction-Alkaline Process Liu Jian-gang, Liu Zhao-gang, Song Hong-fang, Zheng Zhong, 740 The Extraction Kinetics Study of HEH/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 Nd2O3 Fine Powder by Ammoniated Oxalic Acid Precipitation Method , Zhang Shun-Li, Yang Gui-Lin 753

XXV The Study of Using Cation Exchange Fiber to Prepare High Purity Er2Oi Li Mei, Ye Zuguang, Zhang Ruixiang, Zhang Yongchao, Bai Yan, Ma li 757 Study on Extraction Machanism of Ce(IV) By 2-Ethylhexyl 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(III) in an Emulsion Gao Wei, Liu Jian-gang, Zhang Chun-Rui, WangXiu-Yan, Ji Hong-Jun 770 Extraction Separation of Lu(III) from Zr(IV), Ti(IV), Th(IV), Fe(III) and Mechanism of Zr(FV) 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 Diprvaloyhnethanates 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 LiXue-shun, Wei Xu-jun, XuXiu-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 Kua-chih, Li Xing-kang, WangJian 802

XXVI RE Calphad WangJixin 806 Thermodynamic Estimation of Tb-Dy-Fe Phase Diagram WangJixin 810 Phase Diagram and Structure of Cs Srt^i.x) Ybx I3 systems Yuanfeng Xie, Shihua Wang, Xinhua Zhao 814 Thermodynamic Study on the Sm-Ba-Cu-0 System XingXianran, Qiao Zhiyn, 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, g- KazuhiroTakamizawa, Hiroyuki Horitsu, Hironomi 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

xxvn 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 SunBao-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, GaoHong- 879 Antimutagenicity and Anticarcinogenicity of Rare Earth Elements in Vitro Mingzhen Cui, Bai Xiao, Qingsheng Lu, Li Cat, HuaYang. 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 LiPeizhang 891 Rare earth Metal Prices in the United States: from the late 1950's through 1994 James B. Hedrick 894 Vapor Pressures and Thermodynamic Properties of the Rare Earth Disulfides Shilkina T.Yu, VasilyevaI.G. 895

xxm New Method of Preparation of RE, Yttrium and Scandium Metals and Their Compounds A.A.Kamarzin, V. V.Sokolov, L.N.Trushnikova, M. V.Savel'eva, Yu.M.Zelenin, L.I.Osadchaja, Yu.A.Stonoga. 896 Phase Equilibria, Synthesis and Properties Some RE Sulfides GibnerJa.L, BelyevaE.L, 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.Mastumotoi H.Kubota, K.Itou, H.Tateiwa. N.KomadamK.Toma, KSakurai, T.Onoue, TShimizu 900 Rare Earth-Tin Phase Diagrams M.V. Bulanova 903 The Research of Technological Schemes of Rar : earth Elements Separation Based on Mathematical Modeling Bogatov K. B., PiartmanA. K, Puzikov E. '/., Chekmarev A. M. 911 F-d heterobimetallic hydrides D. Baudry, A.Dormond, M. Visseaux, P. Di smurs F. Nief, L. Richard. 912

xxrx