LINEAR AND NONLINEAR SUSCEPTIBILITIES IN CU97CO3 ALLOY FOR FERROMAGNETIC FINE PARTICLES IN METALLIC MATRIX - COMPARISON WITH SPIN-GLASS AU96FE4 ALLOY

Authors
BITOH T OHBA K TAKAMATSU M SHIRANE T CHIKAZAWA S
Citation
T. Bitoh et al., LINEAR AND NONLINEAR SUSCEPTIBILITIES IN CU97CO3 ALLOY FOR FERROMAGNETIC FINE PARTICLES IN METALLIC MATRIX - COMPARISON WITH SPIN-GLASS AU96FE4 ALLOY, Journal of the Physical Society of Japan, 62(8), 1993, pp. 2583-2586
Citations number
23
Categorie Soggetti
Physics
Journal title
Journal of the Physical Society of Japan → ACNP
ISSN journal
00319015
Volume
62
Issue
8
Year of publication
1993
Pages
2583 - 2586
Database
ISI
SICI code
0031-9015(1993)62:8<2583:LANSIC>2.0.ZU;2-X
Abstract
The ac linear (chi0) and nonlinear (chi2) susceptibilities of ferromag netic fine cobalt particles, which were precipitated in a Cu97Co3 allo y, have been studied. The linear susceptibility chi0 has a spin-glass- like maximum at low temperature. The nonlinear susceptibility chi2 is negative and has a peak around the temperature where chi0 exhibits the maximum. However, the negative peak in chi2 is very broad compared wi th that of spin glasses. Furthermore, chi2 is proportional to T-3 at h igh temperatures. This behavior of chi2 in the Cu97Co3 alloy is essent ially different from the divergent behavior of chi2 in spin glasses.