INTRINSIC AND SECONDARY MECHANISMS FOR BIQUADRATIC EXCHANGE COUPLING IN MAGNETIC TRILAYERS

Authors
EDWARDS DM WARD JM MATHON J
Citation
Dm. Edwards et al., INTRINSIC AND SECONDARY MECHANISMS FOR BIQUADRATIC EXCHANGE COUPLING IN MAGNETIC TRILAYERS, Journal of magnetism and magnetic materials, 126(1-3), 1993, pp. 380-383
Citations number
11
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
126
Issue
1-3
Year of publication
1993
Pages
380 - 383
Database
ISI
SICI code
0304-8853(1993)126:1-3<380:IASMFB>2.0.ZU;2-0
Abstract
It is shown for a simple model that intrinsic biquadratic exchange is associated with higher harmonics in the oscillatory exchange coupling. Consequently it is much smaller than the bilinear exchange and falls off much more rapidly with increasing temperature. Neither the intrins ic mechanism nor Slonczewski's secondary mechanism seems to explain th e strong observed biquadratic exchange in Fe/Al/Fe and a suggestion is made for resolving the difficulty.