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The stability of the ferromagnetic state in La(Fe0.86Al0.14)13 under high pressure
Institution:1. Department of Physics, The University of Burdwan, Burdwan, 713104, India;2. Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700064, India;1. College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;3. High Magnetic Field Laboratory, Chinese Academy of Sciences (CAS), Hefei 230031, China;1. Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan;2. Toyota Motor Corporation, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan;3. Technology Reserch Association of Magnetic Materials fot High-efficiency Motors (Mag-HEM) Higashifuji-Branch, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan.
Abstract:The ferromagnetic (FM) La(Fe0.86Al0.14)13 Invar alloy displays a pressure-induced FM to antiferromagnetic (AF) phase transition at a pressure as low as p?0.1 GPa. A quantitative analysis of the results shows that the FM → AF magnetic phase transition recently observed in La(FexAl1?x)13 at ambient pressure is governed by the decrease of the unit cell volume rather than the increase of the number of Fe nearest neighbor atoms.
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