MAGNETOOPTIC STUDY OF THE HIGH-TEMPERATURE COERCIVITY OF MNBIAL AND MNBIPT FILMS

Authors
RUDIGER U FUMAGALLI P ROOS T HOLLANDER B GUNTHERODT G
Citation
U. Rudiger et al., MAGNETOOPTIC STUDY OF THE HIGH-TEMPERATURE COERCIVITY OF MNBIAL AND MNBIPT FILMS, IEEE transactions on magnetics, 33(5), 1997, pp. 3241-3243
Citations number
8
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
1
Pages
3241 - 3243
Database
ISI
SICI code
0018-9464(1997)33:5<3241:MSOTHC>2.0.ZU;2-G
Abstract
We present evidence that domain-wall pinning in MnBi films is responsi ble for the unusual increase of the high-temperature coercivity. The M nBi crystallite size has been reduced by depositing Bi/Mn/Al multilaye rs. The average diameter of the MnBi particles is smaller than the cri tical diameter of single-domain particles, therefore, domain-wall pinn ing does not enhance the high-temperature coercivity as observed for p ure MnBi films.