Time dependence of the thermal switching field of long ferromagnetic particles

Authors
Khapikov, AF
Citation
Af. Khapikov, Time dependence of the thermal switching field of long ferromagnetic particles, J APPL PHYS, 89(11), 2001, pp. 7454-7456
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
89
Issue
11
Year of publication
2001
Part
2
Pages
7454 - 7456
Database
ISI
SICI code
0021-8979(20010601)89:11<7454:TDOTTS>2.0.ZU;2-3
Abstract
A simple one-dimensional micromagnetic model is used to find the nucleation field and the energy barrier for the magnetization reversal at the end of a semi-infinite thin ferromagnetic cylinder. Time dependence of the thermal switching field is calculated. The intrinsic coercivity and thermal stabil ity factor predicted by the model are in a good agreement with recent exper iments on CrO2 tapes and on individual Ni long particles. (C) 2001 American Institute of Physics.