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Magnetic Properties of a TmCo 2 Single Crystal
Author(s) -
Deportes J.,
Gignoux D.,
Givord P.
Publication year - 1974
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.2220640103
Subject(s) - ferrimagnetism , magnetization , condensed matter physics , anisotropy , single crystal , spontaneous magnetization , ground state , magnetic anisotropy , crystal (programming language) , materials science , singlet state , physics , chemistry , crystallography , magnetic field , atomic physics , optics , excited state , quantum mechanics , programming language , computer science
The magnetization of a spherical single crystal of the ferrimagnetic TmCo 2 compound has been studied in fields up to 140 kOe. Below the ordering temperature (4 K ≦ T c ≦ 7 K depending on the melting method) the easy magnetization axis is [111]. Using the fact that the difference in the anisotropy energy between the [111] and [110] axis is very small, the relative importance of fourth and sixth order terms of the crystalline potential has been estimated. The existence of a singlet ground state explains the low spontaneous magnetization observed at 1.5 K.