Ferromagnetic transition assuming a nonlinear volume exchange interaction

Authors
Barner, K Zavadskii, EA Suminov, DY
Citation
K. Barner et al., Ferromagnetic transition assuming a nonlinear volume exchange interaction, PHYS ST S-B, 214(2), 1999, pp. 411-417
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
214
Issue
2
Year of publication
1999
Pages
411 - 417
Database
ISI
SICI code
0370-1972(199908)214:2<411:FTAANV>2.0.ZU;2-2
Abstract
According to theoretical concepts, the dependence of the exchange integral on the interatomic distance J(ab)(r.) has an extremum. But the dependence o f the Curie temperature on volume is usually assumed linear, which excludes the description of the behaviour near the extremum. In the current contrib ution we therefore introduce a nonlinear term into J(ab)(r). This can lead to supermagnetostriction.