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Magnetic phase diagram of La(Fe0.873Co0.007Al0.12)13 cluster intermetallic compound
Institution:1. School of Civil Engineering and Transportation, South China University of Technology, 510640, Guangzhou, China;2. State Key Laboratory of Subtropical Building Science, South China University of Technology, 510640, Guangzhou, China;1. Department of Physics, Blackett Laboratory, Imperial College London, SW7 2AZ London, UK;2. Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 Roskilde, Denmark;3. Department of Earth Science and Engineering, Imperial College London, SW7 2AZ London, UK;1. Moscow M.V.Lomonosov State University, Department of Physics, Moscow, Russia;2. Technological Institute for Superhard and Carbon Materials, Troitsk, Russia;3. Institute of solid state chemistry and mechanochemistry RAS, Novosibirsk, Russia;1. M.N. Mikheev Institute of Metal Physics, S.Kovalevskoy St. 18, 620108 Yekaterinburg, Russia;2. Ural Federal University, Mira St. 19, 620002 Yekaterinburg, Russia;1. Faculty of Physics, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia;2. Edward L. Ginzton Laboratory, Stanford University, California 94305, USA
Abstract:The magnetic properties of the La(Fe0.873Co0.007Al0.12)13 intermetallic compound have been studied. The compound is a cluster antiferromagnet showing the metamagnetic transition. The magnetic phase diagram of the compound has been constructed. The temperature dependence of the inverse paramagnetic susceptibility of La(Fe0.873Co0.007Al0.12)13 obeys the Curie–Weiss law. The large positive paramagnetic Curie point indicates the presence of predominantly ferromagnetic exchange interactions. The Neel temperature can be considered as the temperature of the ferromagnetic ordering of the Fe magnetic moments in clusters coupled antiferromagnetically.
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