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A New Property of Ferromagnetic‐Antiferromagnetic Coupling
Author(s) -
Paccard D.,
Schlenker C.,
Massenet O.,
Montmory R.,
Yelon A.
Publication year - 1966
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.19660160131
Subject(s) - antiferromagnetism , ferromagnetism , condensed matter physics , hysteresis , coupling (piping) , materials science , magnetic hysteresis , physics , magnetization , magnetic field , quantum mechanics , metallurgy
Three systems exhibiting ferromagnetic‐antiferromagnetic coupling, CoCoO, NiFeNiFeMn, NiFeCr 2 O 3 , are studied using uniaxial thin films. A new property of such systems is found, i.e., a concentration of the hysteresis loops as a function of the number of cycles traced ( n ). This contraction follows a 1/ \documentclass{article}\pagestyle{empty}\begin{document}$\sqrt n $\end{document} n law for the first 50 cycles and is related to the rotational hysteresis. This phenomenon is attributed to fluctuations in the ferromagnetic‐antiferromagnetic coupling, which modify the magnetic interactions between differently coupled regions with each reversal.