Thomson, T. and O'Grady, K. and Bayreuther, Günther (1997) Magnetization reversal mechanisms and time-dependent processes in thin Tb/Fe multilayer films. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 30 (11). pp. 1577-1587. ISSN 0022-3727, 1361-6463
Full text not available from this repository.Abstract
In this paper we apply the interpretation of magnetization measurements developed in an associated paper to Tb/Fe multilayers for magneto-optic recording applications. Our results show that remanence curves and delta-/ plots are able to determine the controlling mechanism for magnetization reversal in Tb/Fe multilayers. In the multilayer with the greatest Tb content this domain nucleation controlled magnetization reversal gave way to domain wall pinning controlled reversal for films with more than 6 bilayers. In the intermediate Tb content multilayers, domain wall pinning became important only after 20 bilayers, whereas for the lowest Tb content film reversal remained domain nucleation controlled throughout the series. The form of the time dependence of magnetization is connected to the magnetization reversal process. All the films that showed magnetization reversal dominated by domain nucleation also exhibited a nonlinear ln(t) time dependence whereas films showing domain wall pinning reversal exhibited a linear ln(t) time dependence. The form of the activation volume as a function of applied field is the same for all the films controlled by domain nucleation processes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL RECORDING MEDIA; DIRECT OVERWRITE; ANISOTROPY |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Günther Bayreuther |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Apr 2023 06:51 |
| Last Modified: | 27 Apr 2023 06:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50762 |
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