Interplay between crystal and magnetic structures in YFe₂(H_αD_1−α)_4.2 compounds studied by neutron diffraction

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• 作者：V. Paul-Boncour^a ; ^{paulbon@icmpe.cnrs.fr} ; M. Guillot^b ; O. Isnard^c ; ^d ; B. Ouladdiaf^e ; A. Hoser^f ; T. Hansen^e ; N. Stuesser^f
• 关键词：Laves phases ; Metal hydride ; Isotope effect ; Neutron diffraction ; Magnetic structure ; Magnetic transition
• 刊名：Journal of Solid State Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：245
• 期：Complete
• 页码：98-109
• 全文大小：1366 K
• 卷排序：245

文摘

YFe2(H,D)4.2 compounds undergoes a isotope sensitive FM-AFM transition at TM0. The FM structure is formed of Fe moments perpendicular to the monoclinic b axis. AFM structure is formed by antiparallel Fe layers separated by non-magnetic Fe layer. One Fe site among eight loses its moment at TM0 due to larger Fe–H bonding. Magnetic properties are driven by the monoclinic distortion induced by D order.