BIQUADRATIC MAGNETIC COUPLING IN NIFE AG MULTILAYERS/

Authors
RODMACQ B DUMESNIL K MANGIN P HENNION M
Citation
B. Rodmacq et al., BIQUADRATIC MAGNETIC COUPLING IN NIFE AG MULTILAYERS/, Physical review. B, Condensed matter, 48(5), 1993, pp. 3556-3559
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
5
Year of publication
1993
Pages
3556 - 3559
Database
ISI
SICI code
0163-1829(1993)48:5<3556:BMCINA>2.0.ZU;2-4
Abstract
Magnetoresistance, magnetization, and polarized neutron experiments ha ve been performed on Ni81Fe19/Ag multilayers. The results give evidenc e for both biquadratic and bilinear contributions to the total couplin g energy. The strong temperature dependence of the biquadratic term le ads to a crossover from a canted state at low temperature to an antife rromagnetic one beyond 100 K. We suggest that the biquadratic term cou ld arise from local concentration fluctuations in the chemically disor dered NiFe layers.