NUCLEATION OF PLANAR MAGNETIZATION IN ULTRA-THIN MAGNETIC-FILMS

Authors
CHUI ST
Citation
St. Chui, NUCLEATION OF PLANAR MAGNETIZATION IN ULTRA-THIN MAGNETIC-FILMS, Journal of magnetism and magnetic materials, 168(1-2), 1997, pp. 9-14
Citations number
15
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
168
Issue
1-2
Year of publication
1997
Pages
9 - 14
Database
ISI
SICI code
0304-8853(1997)168:1-2<9:NOPMIU>2.0.ZU;2-8
Abstract
We study theoretically the magnetization reversal of Heisenberg spins in a 2D plane under an external reversing field at finite temperatures . Nucleation is observed in a Monte Carlo simulation for an array of s pins interacting with exchange, anisotropic and dipolar interactions. The nucleus is elliptical in shape. The eccentricity is smaller the la rger the dipolar interaction is with respect to the exchange. The coer cive field seems to depend linearly on the temperature.