| Autor: |
Guo, J. Q., Takeda, H., Kazama, N. S., Fukamichi, K., Tachiki, M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/1/1997, Vol. 81 Issue 11, p7445, 5p |
| Abstrakt: |
Magnetoresistance of the La[sub 0.67]Ca[sub 0.33]MnO[sub 3-δ] 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 × 10[sup 6]% 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 × 10[sup −7] to 1 Torr. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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