Effects of substrate temperature on the magnetic and electrical properties of cobalt ferrite metal composite thin films

Authors
Na, JGPark, CHHeo, NHKim, JPark, K
Issue Date
1999-03
Publisher
KLUWER ACADEMIC PUBL
Citation
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v.10, no.1, pp.59 - 62
Abstract
The magnetic and electrical properties of the cobalt ferrite/metal composite thin films, prepared by reactive sputtering, were studied as a function of substrate temperature. With increasing substrate temperature, the saturation magnetization of the thin films increased owing to precipitation of the Co0.67Fe0.33 phase. Also, the electrical resistivity of the thin films decreased. From Hall experiments, the decrease of electrical resistivity of the composite thin films was mainly attributed to the increase of electron concentration. The Seebeck coefficient measurement shows that the electrical conduction mechanism of the thin films containing 37.8 and 33.7 at % Co changes from p-type to n-type and that of the thin films containing 28.5 at % Co remains n-type with increasing substrate temperature. This might be attributed to the change in composition of the cobalt ferrite matrix to Fe-excess with precipitation of Go-rich Fe alloy. (C) 1999 Kluwer Academic Publishers.
Keywords
DEPOSITION; DEPOSITION
ISSN
0957-4522
URI
https://pubs.kist.re.kr/handle/201004/142339
DOI
10.1023/A:1008931224453
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KIST Article > Others
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