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Magnetic order and phase diagram of magnetic alloy system: Mg x Ni 1– x O alloy
Author(s) -
Li Mingkai,
Long Debing,
Ahuja Rajeev,
He Yunbin
Publication year - 2017
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201700085
Subject(s) - antiferromagnetism , paramagnetism , neutron diffraction , alloy , phase diagram , condensed matter physics , materials science , phase (matter) , ground state , crystallography , chemistry , physics , crystal structure , atomic physics , metallurgy , organic chemistry
The antiferromagnetic phase diagram of Mg x Ni 1 −x O alloy was reexamined theoretically by multicomponent cluster expansion method. It predicts antiferromagnetic state in the alloy with high Mg content, instead of a mixture of antiferromagnetic and paramagnetic states, which was deduced previously from neutron diffraction results. The theoretically found intermediate antiferromagnetic ground states at Mg contents of x Mg = 0.25 and 0.75 exhibit very low neutron diffraction intensities, which leads to confusion with paramagnetic state. Our approach here reduced remarkably the computation time in searching the intermediate ground states as well as calculating the magnetic phase diagram.