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The Distribution of Magnetic Moments and the Temperature Dependence of Reduced Hyperfine Fields in Amorphous Ferromagnets
Author(s) -
Kaneyoshi T.,
Tamura I.
Publication year - 1984
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.2221230216
Subject(s) - hyperfine structure , condensed matter physics , ferromagnetism , spins , amorphous metal , magnetic moment , amorphous solid , magnetic field , materials science , field (mathematics) , distribution (mathematics) , physics , chemistry , atomic physics , quantum mechanics , mathematical analysis , mathematics , organic chemistry , pure mathematics
The distribution of magnetic moments in amorphous transition metal—metalloid ferromagnetic alloys is first estimated from the linewidths of hyperfine fields. The result shows that there exists a rather broad distribution of magnetic moments with some spins aligned antiferromagnetically in the alloys. The temperature dependence of reduced hyperfine fields in the alloys is evaluated by a simple molecular‐field theory, taking account of the distribution of magnetic moments in addition to the usual exchange fluctuations. Quantitative agreement between the theoretical and experimental curves is more rectified at the intermediate reduced temperature range, in comparison with the case of the usual exchange fluctuations.