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Schlagwörter:
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Zusammenfassung:
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.
