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Magnetocaloric Materials for Magnetic Refrigeration at Room Temperature Xueying Hai

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Magnetocaloric Materials for Magnetic Refrigeration at Room Temperature Xueying Hai Magnetocaloric materials for magnetic refrigeration at room temperature Xueying Hai To cite this version: Xueying Hai. Magnetocaloric materials for magnetic refrigeration at room temperature. Thermics [physics.class-ph]. Université Grenoble Alpes, 2016. English. NNT : 2016GREAY073. tel-01597585 HAL Id: tel-01597585 https://tel.archives-ouvertes.fr/tel-01597585 Submitted on 28 Sep 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSE Pour obtenir le grade de DOCTEUR DE LA COMMUNAUTÉ UNIVERSITÉ GRENOBLE ALPES Spécialité : Physique des Matériaux Arrêté ministériel : 7 août 2006 Présentée par Xueying HAI 海雪莹 Thèse dirigée par Salvatore MIRAGLIA et co-encadrée par Charlotte MAYER préparée au sein de l’Institut Néel, CNRS, Grenoble dans l'École Doctorale de Physique Financée par l’ANRT et Erasteel SAS sous projet CIFRE N°2013/0827 Matériaux magnétocaloriques pour la réfrigération à température ambiante Thèse soutenue publiquement le 24 novembre, 2016, devant le jury composé de : M. Olivier ISNARD Professeur, Université Grenoble Alpes, Grenoble, Président Mme. Valérie PAUL-BONCOUR Directrice de Recherche, CNRS-ICMPE, Thiais, Rapportrice Mme. Florence PORCHER Chercheure, CEA-LLB, Gif-sur-Yvette, Rapportrice Mme. Sophie TENCE Chargée de Recherche, CNRS-ICMCB, Bordeaux, Examinatrice M. Salvatore Miraglia Directeur de Recherche, CNRS-Institut Néel, Grenoble, Membre Mme. Charlotte MAYER Ingénieure de Recherche, Erasteel SAS, Paris, Membre THÈSE Pour obtenir le grade de DOCTEUR DE LA COMMUNAUTÉ UNIVERSITÉ GRENOBLE ALPES Spécialité : Physique des Matériaux Arrêté ministériel : 7 août 2006 Présentée par Xueying HAI 海雪莹 Thèse dirigée par Salvatore MIRAGLIA et co-encadrée par Charlotte MAYER préparée au sein de l’Institut Néel, CNRS, Grenoble dans l'École Doctorale de Physique Financée par l’ANRT et Erasteel SAS sous projet CIFRE N°2013/0827 Matériaux magnétocaloriques pour la réfrigération à température ambiante Thèse soutenue publiquement le 24 novembre, 2016, devant le jury composé de : M. Olivier ISNARD Professeur, Université Grenoble Alpes, Grenoble, Président Mme. Valérie PAUL-BONCOUR Directrice de Recherche, CNRS-ICMPE, Thiais, Rapportrice Mme. Florence PORCHER Chercheure, CEA-LLB, Gif-sur-Yvette, Rapportrice Mme. Sophie TENCE Chargée de Recherche, CNRS-ICMCB, Bordeaux, Examinatrice M. Salvatore Miraglia Directeur de Recherche, CNRS-Institut Néel, Grenoble, Membre Mme. Charlotte MAYER Ingénieure de Recherche, Erasteel SAS, Paris, Membre Preface page This thesis is submitted in partial fulfillment of the requirements for obtaining the degree of Ph.D. at the Grenoble Alpes University (UGA). The thesis work was carried out from December 2013 to November 2016 at the Néel Institute, which is part of the French National Centre for Scientific Research (CNRS). Financial support is provided by a grant (CIFRE N°2013/0827) from the National Association of Research and Technology (ANRT). The thesis work is an Industrial Training through Research (CIFRE) project in partnership with Erasteel S.A.S., an ERAMET branch. Grenoble November 2016 Xueying Hai Copyright © Xueying Hai, 2016. All rights reserved. To my parents 给我的父亲母亲 Acknowledgements This thesis work could not have been possible without the help of so many colleagues and friends! I am extremely grateful for working on this innovative project. First and foremost, I would like to thank the director the Néel Institute to welcome me in this laboratory. In fact, with the changes in organization during my thesis, I would like to thank the three directors in these years, Alain Schuhl, Hervé Courtois, and Etienne Bustarret. I have been very well integrated in the laboratory and have been able to do my work with all the help I can get. The constitution of the CIFRE project has made the financial support of this thesis possible, I would like to thank the director of the R&D department of Erasteel, an ERAMET branch, Serge Sella, for recruiting me and giving me useful suggestions from time to time. I appreciate the exchanges with Peter Vikner and Michel Pierronnet. I would like to thank all the administrative staff at Erasteel who have accompanied me through these years. I appreciate their understanding and support. I would like to express my sincere gratitude and appreciation for my supervisors, Salvatore Miraglia and Charlotte Mayer. They have not only guided me in my everyday work but also shared with me anecdotes, jokes, and life lessons. Salvatore has been extremely helpful in terms of not only physics but also facilitating administrative procedures in every way he can. I appreciate Charlotte for making her monthly travel to meet with us to discuss the project and for teaching me so much insight on working in the private sector without reservation. I appreciate their patience and diligence in reading and correction of my manuscript. For all this, I could not have been more grateful to have very understanding and humane supervisors, who have made working with them extremely easy and delightful. I have been able to exercise in diverse experiments thanks to all the researchers, technicians, and engineers in the laboratory. I would like to acknowledge Cécile Berne, who has initiated me with different experimental techniques and has taught me so many things since the beginning! It was always a pleasure to discuss with her about life, wine, having an organic life, etc., always something new to learn! I thank Claire Colin for her dedication as local contact at the ILL, for her help in resolving the magnetic structure in neutron data, and for making herself available in general. I thank Vivian Nassif and Sofian Djellit for helping me with the neutron diffraction experiment. I would like to express my appreciation for Florence Porcher for her expertise and help in the neutron experiments at LLB and in the data interpretation. I am grateful for the French CRG project for making it possible to have access to neutron facilities during my thesis. For the preparation of samples, I would like to express my sincere appreciation for Paul Chômeton, Arnaud Quillery, Jerôme Debray, and Sébastian Pairis. I thank Muriel Legendre for her help and time in the annealing process. Special thanks to Philippe Plaindoux, for his expertise in metallurgy, who has helped me in so many ways in different thermal experiments (DSC/DTA) and melt-spinning techniques. Special thanks to Richard Raettel, who is always in good mood and speaks with an open mind, has trained me in the melting and related techniques. His workshop is always well organized and I can always find help whenever needed. I would like to thank the help and guidance of Pierre Bordet, Daniel Bourgault, Patricia Derango, Marine Liotaud, Sophie Rivoirard, Remy Bruyère, Didier Dufeu, Yves Deschanel, Christophe Bouchard, Fréderic Gay, and Emmanuel Verloop. I thank Lilian De-Coster and Florence Fernandez for helping me with organizing the reception after my defense. How can I forget all my fellow doctorate students, post-docs, and interns for the moral support, the encouragement at the most difficult times, and the days and nights we spent together? Special thanks to Pauline, Elodie, Céline, Mériam, Khalil and Justin, who have also defended their thesis or about to this year. It seems like we have grown up together during these three years. A big thank you to Cyril, Shridevi, Peng, Feng, Josephine, Arnaud, Nathaniel, (and Christophe, though not a student) and so many others who just started their projects at Néel. Thank you so much for making the wonderful graduation hat, I love it! I came into the laboratory thinking that I would only meet colleagues in a professional setting, but I am leaving now with friends! Who would have thought of that? Whether it is grabbing a drink, playing board games, going to restaurants, even to a wedding (!), or spending the day in the nature hiking, skiing, you have made my job fun. At the same time, I would like to thank those who animate my life outside the laboratory: old and new friends from Grenoble, the US, and China. I want to thank my parents for believing in me and supporting my decisions, no matter where it takes me. What a great effort they have made in flying all the way here to attend my defense and preparing the perfect reception. I would like to thank my lovely French family, the Scheids and the Maffres. I could not be happier that I was able to celebrate with all of them. Thank you Tristan for always making me smile and for venturing out on the future without hesitation. Thank you so much, Kate, for always being my kindred spirit across the ocean. I would like to express my appreciation for my jury members. I have been so fortunate and proud to have a jury with a great female representation of the scientific committee. I would like to thank Mme. Valérie Paul-Boncour from ICMPE at Thiais and Mme. Florence Porcher from LLB at Gif sur Yvette to have accepted the task of being the reporters of my thesis. They have given me valuable suggestions and support in their reports and during my defense. I would like to thank Mme. Sophie Tencé from ICMCB at Bordeaux and M. Olivier Isnard, professor at Université Grenoble Alpes as the examiners of my work. Their expertise in magnetism and intermetallics was of great value in writing the final version of my manuscript. So many thanks to my jury members who have put in effort to judge my work in order to give me the honor of a degree in Doctor of Materials Physics at Université Grenoble Alpes.
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