Optimized process for the fabrication of mesoscopic magnetic structures
作者:
A. O. Adeyeye,
J. A. C. Bland,
C. Daboo,
D. G. Hasko,
H. Ahmed,
期刊:
Journal of Applied Physics
(AIP Available online 1997)
卷期:
Volume 82,
issue 1
页码: 469-473
ISSN:0021-8979
年代: 1997
DOI:10.1063/1.365840
出版商: AIP
数据来源: AIP
摘要:
We have used the advantage of the high etch selectivity between metals in a wet etching process to develop an optimized technique for engineering magnetic materials. This method is based on electron beam lithography and optimized pattern transfer by a combination of dry and wet etching. The technique has been used in fabricating mesoscopicNi80Fe20dots and wires with lateral dimensions down to 0.2 &mgr;m. We have used scanning electron microscopy to verify the lateral sizes and edge acuity of the structures. The magnetic properties were characterized using magneto-optic Kerr effect and magnetoresistance measurements. A marked increase in the coercive field and the saturation field is seen as the width of the wire is decreased. The magnetoresistance change(∂R)is found to increase significantly as the width of the wire is decreased. ©1997 American Institute of Physics.
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