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Phys. Rev. B 57, 11935–11938 (1998)

[Issue 19 – 15 May 1998 ]

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In-plane magnetic anisotropy of bcc Co on GaAs(001)

Y. Z. Wu, H. F. Ding, C. Jing, D. Wu, G. L. Liu, V. Gordon^*, G. S. Dong, and X. F. Jin^§

Fudan T. D. Lee Physics Laboratory and Surface Physics Laboratory, Fudan University, Shanghai 200433, China

S. Zhu and K. Sun

Beijing Laboratory of Electron Microscopy, Chinese Academy of Science, and Department of Material Engineering, Dalian University of Technology, Dalian, China

Epitaxial growth of Co on GaAs(001) and its in-plane magnetic anisotropy are studied using reflection high-energy electron diffraction, a high-resolution transmission electron microscope, and the magneto-optical Kerr effect. In the initial and final stages of growth, Co exists in single-crystalline body-centered-cubic (bcc) and hexagonal-closed-packed (hcp) phases, respectively, while in the middle stage the coexistence of the bcc and hcp structures is observed. For the bcc Co thin films on GaAs(001), a fourfold in-plane magnetic anisotropy with easy axes along the <100> directions is realized and discussed.

©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v57/p11935
DOI: 10.1103/PhysRevB.57.11935
PACS: 68.55.Jk, 68.35.Bs, 75.70.Ak

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