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Effect of growth temperature on the structural, morphological and magnetic properties of Fe films on GaN(0 0 0 1)

✍ Scribed by Cunxu Gao; Oliver Brandt; Jonas Lähnemann; Jens Herfort; Hans-Peter Schönherr; Uwe Jahn; Bernd Jenichen

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
955 KB
Volume
323
Category
Article
ISSN
0022-0248

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✦ Synopsis

Heteroepitaxial Fe films on GaN(0 0 0 1) are grown at 50, 350 and 500 1C by molecular beam epitaxy.

The structural properties of these films are studied in situ by reflection high-energy electron diffraction f scans and ex situ by electron backscatter diffraction and longitudinal as well as azimuthal X-ray scans. Their morphological and magnetic properties are investigated by atomic force microscopy and superconducting quantum interference device magnetometry, respectively. Higher growth temperatures lead to a clear improvement of the structural quality of the films while retaining their morphological integrity. Furthermore, the coercivity of the films increases significantly with growth temperature.

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