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Journal Article

Thin epitaxial films of the Heusler compound Co2Cr0.6Fe0.4Al

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Jakob, G., Casper, F., Beaumont, V., Falk, S., Auth, N., Elmers, H.-J., et al. (2005). Thin epitaxial films of the Heusler compound Co2Cr0.6Fe0.4Al. Journal of Magnetism and Magnetic Materials, 290-291, 1104-1107. doi:10.1016/j.jmmm.2004.11.466.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-61FB-0
We prepared thin films of the Heusler compound Co2Cr0.6Fe0.4Al with the B2 structure on a-plane (11 (2) over bar0) Al2O3 by sputtering. Films grown at high temperatures (T ≥ 600° C) on Al2O3 are fully epitaxial with the (110) and (1 (1) over bar0) planes of the film parallel to the (I I 0) and (0 0 0 1) planes of the substrate, respectively. These epitaxial films possess a higher surface roughness than films grown at room temperature. The films show nearly rectangular hysteresis loops with coercive fields of the order of 10mT. Magnetooptical Kerr measurements show an in-plane anisotropy of the magnetization with the easy axis in {001} direction. Hall measurements show a strong anomalous Hall effect and a weak normal Hall voltage signalling the existence of a compensated Fermi surface. © 2004 Elsevier B.V. All rights reserved.