Magnetic phases of thin Fe films grown on stepped Cr(001)
| Autor: | Z. Q. Qiu, Roland Kawakami, Ernesto J. Escorcia-Aparicio, Hyuk J. Choi, J. H. Wolfe, Wai Li Ling |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Physical Review B. 59:11892-11896 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.59.11892 |
| Popis: | Magnetic phases of Fe films grown on curved Cr(001) with steps parallel to [100] are studied using the surface magneto-optic Kerr effect (SMOKE). We found that the atomic steps (1) induce an in-plane uniaxial magnetic anisotropy with the easy magnetization axis parallel to the step edges, and (2) generate magnetic frustration either inside the Fe film or at the Fe-Cr interface, depending on the Fe film thickness and the vicinal angle. For thickness greater than 35 {Angstrom}, the Fe film forms a single magnetic domain and undergoes an in-plane magnetization switching due to the competition of the step-induced anisotropy and the Fe-Cr interfacial frustration. For thickness less than 35 {Angstrom}, the Fe film forms multiple magnetic domains at low vicinal angle, and transforms into a single domain at high vicinal angle. A magnetic phase diagram in the 30{endash}45 {Angstrom} thickness range was obtained using a wedge-shaped Fe film. {copyright} {ital 1999} {ital The American Physical Society} |
| Databáze: | OpenAIRE |
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