Study of the magnetoresistance of magnetic film modified by using ion beams

Title
Study of the magnetoresistance of magnetic film modified by using ion beams
Authors
석재권전일근김택수송종한이재용
Keywords
magnetic multilayers; magnetic thin films; magnetoresistance; transmission electron microscopy
Issue Date
2011-04
Publisher
Journal of applied physics
Citation
VOL 109, 07C730-1-07C730-3
Abstract
We have studied the magnetoresistance (MR) of locally modified Cu(20 nm)/AlOx(1 nm)/NiFe (20 nm)/AlOx(1 nm)/Cu(3 nm) on a Si substrate. The local modification was performed by irradiating Cu ion beams on a photoresist wire-covered film. After irradiation, the hysteresis loop shows step-like behavior at a specific ion dose, which is caused by the difference in the switching fields of the irradiated and unirradiated region of the film. Because of this, plateau-like behavior is observed in the transverse MR measurement of the film with 1x1016 ions/㎠. A cross-sectional transmission electron microscopy image shows the irradiation induced intermixing of the magnetic layer with nonmagnetic layers.
URI
http://pubs.kist.re.kr/handle/201004/39592
ISSN
0021-8979
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KIST Publication > Article
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