Critical point of magnetic nanostructures in the Ising model

Authors
Wang, HY Zhou, YS Wang, EG Lin, DL
Citation
Hy. Wang et al., Critical point of magnetic nanostructures in the Ising model, CHIN J PHYS, 39(1), 2001, pp. 85-89
Citations number
12
Categorie Soggetti
Physics
Journal title
CHINESE JOURNAL OF PHYSICS
ISSN journal
05779073 → ACNP
Volume
39
Issue
1
Year of publication
2001
Pages
85 - 89
Database
ISI
SICI code
0577-9073(200102)39:1<85:CPOMNI>2.0.ZU;2-D
Abstract
The critical temperature T-c of magnetic nanostructures is calculated by th e variational cumulant expansion in the Ising model. Structures of column, plate and cubic shapes are constructed for the study of shape effects. It i s found that T-c increases with the decreasing surface to volume ratio. The dependence of T-c on the growth direction is also studied for various cubi c lattices.