Structure and magnetic properties of YCo5 compound at high pressures
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第7期
论文作者：E.Burzo P.Vlaic D.P.Kozlenko N.O.Golosova S.E.Kichanov B.N.Savenko A.Ostlin L.Chioncel
文章页码：106 - 112
摘 要：The crystal structure and magnetic properties of YCo5 compound have been studied by neutron diffraction,in the pressure range 0 ≤ p ≤ 7.2 GPa.The cobalt moments decrease with pressure,parallelly with anisotropic changes of lattice parameters.The experimental data are analyzed together with results from the combined Density Functional and Dynamical Mean-Field Theory.A rather good agreement between the experimentally determined and calculated values of cobalt moments is shown.Our scenario for the behavior of YCo5 under pressure,is the combined action of the Lifshitz transition with a strong local electron-electron interaction.
E.Burzo1,2，P.Vlaic3，D.P.Kozlenko4，N.O.Golosova4，S.E.Kichanov4，B.N.Savenko4，A.Ostlin5,6，L.Chioncel5,6
1. Faculty of Physics, Babes-Bolyai University2. Romanian Academy of Science,Cluj-Napoca Branch3. University of Medicine and Pharmacy “Iuliu Hatieganu”, Physics and Biophysics Department Cluj-Napoca4. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research5. Theoretical Physics Ⅲ, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg
摘 要：The crystal structure and magnetic properties of YCo5 compound have been studied by neutron diffraction,in the pressure range 0 ≤ p ≤ 7.2 GPa.The cobalt moments decrease with pressure,parallelly with anisotropic changes of lattice parameters.The experimental data are analyzed together with results from the combined Density Functional and Dynamical Mean-Field Theory.A rather good agreement between the experimentally determined and calculated values of cobalt moments is shown.Our scenario for the behavior of YCo5 under pressure,is the combined action of the Lifshitz transition with a strong local electron-electron interaction.
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