Bayreuther, Guenther and Premper, Joerg and Sperl, Matthias and Sander, Dirk (2012) Uniaxial magnetic anisotropy in Fe/GaAs(001): Role of magnetoelastic interactions. PHYSICAL REVIEW B, 86 (5): 054418. ISSN 1098-0121,
Full text not available from this repository. (Request a copy)Abstract
The origin of the in-plane uniaxial magnetic anisotropy of epitaxial Fe(001) films on GaAs(001) has been controversially attributed either to a magnetoelastic interaction or to oriented interface bonds. In order to check the relevance of magnetoelastic contributions we performed magneto-optic Kerr effect (MOKE) and magnetoelastic stress measurements on Fe(001) and Fe32Co68(001) bcc epitaxial films on GaAs(001) in a thickness range from several monolayers (ML) up to 100 ML. The magnetoelastic coupling coefficient B-2 of 30 ML films is +(8.4 +/- 1.4) MJ/m(3) for Fe(001) and -(23.2 +/- 3.7) MJ/m(3) for Fe32Co68(001), respectively. In spite of the opposite sign of B-2 for Fe and Fe32Co68, the same sign of the uniaxial anisotropy constant K-U(eff) is experimentally observed. It is concluded that the magnetoelastic interaction is not the dominating contribution to the uniaxial magnetic anisotropy in these systems.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EPITAXIAL FE FILMS; SUBSTRATE SURFACE RECONSTRUCTION; SPIN INJECTION; GAAS(001); SEMICONDUCTOR; STRESS; VOLUME; |
| 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: | 11 May 2020 05:22 |
| Last Modified: | 11 May 2020 05:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18300 |
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