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Variations of surface roughness for depositionof Co-sputtered-ZnO(002) by Auger electron spectroscopyand surface magneto-optic Faraday effect

Published online by Cambridge University Press:  28 January 2011

Y.-C. Chang ,
C.-W. Su ,
S.-C. Chang  and
Y.-H. Lee
Y.-C. Chang
Affiliation:
Department of Electrophysics, National Chiayi University, 60004 Chiayi, Taiwan
C.-W. Su*
Affiliation:
Department of Electrophysics, National Chiayi University, 60004 Chiayi, Taiwan
S.-C. Chang
Affiliation:
Department of Electrophysics, National Chiayi University, 60004 Chiayi, Taiwan
Y.-H. Lee
Affiliation:
Department of Physics, National Cheng Kung University, 1 University Rd., 70101 Tainan, Taiwan
*
[email protected]
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Abstract

Auger electron spectroscopy and the surfacemagneto-optical Faraday effect were used to monitor the depositionof Co ultrathin films on an initially rough ZnO(002) crystalsurface. The magnetic properties of the epitaxial films werecompared with those associated with that the structure properties ina 3D island growth mode. The magneto-optic signals are verysensitive to the thickness of the Co film structure, even if it isrough. The ZnO(002) substrate surface formed by routine ionsputtering may exhibit short-range ordering in the initial samplepreparation. The roughness of a sputtered substrate surface can bedetermined from the sensitive magneto-optical signals, especiallywhen ultrathin films are deposited in the initial stage of growth.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 53 , Issue 2 , February 2011 , 21501
Copyright
© EDP Sciences, 2011

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