Magnetic properties of Fe films epitaxially grown on Cr/GaAs(100) by dc magnetron sputtering
作者:
Biao Li,
J. R. Fermin,
Antonio Azevedo,
F. M. de Aguiar,
S. M. Rezende,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 21
页码: 2760-2762
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.121082
出版商: AIP
数据来源: AIP
摘要:
We report on the growth of single-crystal Fe films by magnetron sputtering onto GaAs substrates. In order to establish the epitaxial orientation with the substrate a 100 Å Cr buffer layer was rf sputtered. The crystalline and magnetic properties were studied by x-ray diffraction, ferromagnetic resonance, and Kerr effect magnetometry techniques. The &thgr;-2&thgr; x-ray measurements show that only the Fe (200) peak is present, and the rocking curve shows a full width half maximum of 2°. Ferromagnetic resonance lines exhibit a line width of about 30 Oe, and the in-plane resonance field as a function of the azimuth angle presents a fourfold symmetry with no induced anisotropy. The in-plane hard- and easy-axis magneto-optical hysteresis loop traces are consistent with the ferromagnetic resonance results. ©1998 American Institute of Physics.
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