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Applied Physics Letters -- April 8, 1996 -- Volume 68, Issue 15 pp. 2155-2157

Structure and magnetic anisotropy of epitaxial fcc-Co(110) and hcp-Co(100) films

C. K. Lo, Y. Liou, C. P. Chang, I. Klik, and Y. D. Yao

Institute of Physics, Academia Sinica, Taipei, Taiwan, Republic of China

J. C. A. Huang

Department of Physics, National Cheng-Kung University, Tainan, Taiwan, Republic of China

(Received 8 November 1995; accepted 2 February 1996)

Fcc-Co(110) and hcp-Co(100) films of 200 Å thickness were grown on MgO(110) and bcc-Cr(211)/MgO(110), respectively, by the molecular beam epitaxy method. Reflection high energy diffraction was used to in situ characterize the crystal structure. Co films grown directly on MgO(110) were pseudomorphic fcc structure. Twofold symmetrical hcp-Co(100) films on top of the bcc-Cr(211)/MgO(110) were grown and confirmed. The magneto-optical Kerr effect (MOKE) was used to investigate the magnetic anisotropy of these films. The magnetization of these samples was found to be in-plane. The magnetization of fcc-Co films has cubic symmetry with texture induced uniaxial anisotropy. For hcp-Co(100)/bcc-Cr(211) bilayer films, the magnetization was strongly anisotropic, but independent of the thickness of the Cr layer. ©1996 American Institute of Physics.

PII: S0003-6951(96)01415-5
DOI: 10.1063/1.115616
PACS: 75.70.-i, 75.30.Gw        Additional Information

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Citing Articles

1. Magnetic and structural characterizations of HCP permalloy films grown by molecular beam epitaxy
   J. C. A. Huang et al., J. Appl. Phys. 83, 7046 (1998)