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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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