Elementary excitations in reentrant magnets and concentrated spin glasses

We present a systematic study of the temperature dependence of the field induced magnetization, (M), derived from magnetic resonance data, in reentrant magnets and concentrated spin glasses. In the former, M reduces as T at low T and as T 3 2 at high T. In the latter, M is roughly constant at low T...

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Bibliographic Details
Published in:Solid state communications 1987-11, Vol.64 (7), p.1005-1009
Main Authors: Liao, S.B., Bhagat, S.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Magnetic properties and materials
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Specific materials
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Summary:We present a systematic study of the temperature dependence of the field induced magnetization, (M), derived from magnetic resonance data, in reentrant magnets and concentrated spin glasses. In the former, M reduces as T at low T and as T 3 2 at high T. In the latter, M is roughly constant at low T and drops linearly with T at high T. An attempt is made to understand the observations by introducing an energy gap in the magnetic excitation spectrum along with a non-zero density of states at the gap energy.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(87)91019-2