QUANTUM TUNNELING FROM A CRITICAL-STATE IN SMALL ANTIFERROMAGNETIC PARTICLE

Authors
BARBARA B BARBERO G DOBROVITSKI VV ZVEZDIN AK
Citation
B. Barbara et al., QUANTUM TUNNELING FROM A CRITICAL-STATE IN SMALL ANTIFERROMAGNETIC PARTICLE, Journal of applied physics, 81(8), 1997, pp. 5539-5541
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
81
Issue
8
Year of publication
1997
Part
2B
Pages
5539 - 5541
Database
ISI
SICI code
0021-8979(1997)81:8<5539:QTFACI>2.0.ZU;2-E
Abstract
The magnetic relaxation in small (of order of hundreds nanometers) ant iferromagnetic particle is considered. To explain very small tunneling (activated) volume in the particle exhibiting a single-domain behavio r, we propose to account for the role of defects. The relaxation proce ss is considered as a sequence of small jumps in a potential created b y defects. Kinetics of this process is considered. (C) 1997 American I nstitute of Physics.