Deposition conditions of magnetoresistance in La{sub 0.67}Ca{sub 0.33}MnO{sub 3{minus}{delta}} thin film
- Sendai Institute of Materials Science and Technology, Research and Development Division, YKK Corporation, 38 Shimosakuranoki, Akaishi, Tomiya, Kurokawa, Miyagi-Ken, 981-33 (Japan)
- Department of Materials Science, Faculty of Engineering, Tohoku University, Sendai 980 (Japan)
- National Research Institute for Metals, 1-2-1 Sengen, Tsukuba, Ibaraki, 305 (Japan)
Magnetoresistance of the La{sub 0.67}Ca{sub 0.33}MnO{sub 3{minus}{delta}} thin films was investigated. The magnetoresistance depends on ablation conditions such as the substrate temperature and oxygen pressure and has a relation with the lattice constants of the thin films. A colossal magnetoresistance ratio with 4.79{times}10{sup 6}{percent} was obtained at 70 K and a magnetic field of 5.5 T. The resistivity of the thin films has a close relation with the substrate temperature and the oxygen pressure. When the substrate temperature is fixed, the resistivity shows double peaks in the oxygen pressure range of 1{times}10{sup {minus}7} to 1 Torr. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 503601
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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