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Growth of Sr1−xNdxCuOy Thin Films by Rf-Magnetron Sputtering and Pulsed-Laser Deposition

Published online by Cambridge University Press:  26 February 2011

Nobuyuki Sugii
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
Michiharu Ichikawa
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
Koichi Kubo
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
Takeshi Sakurai
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
Kiyoshi Yamamoto
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
H. Yamauchi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 10–13 Shinonome 1-chome, Koto-ku, Tokyo 135, JAPAN
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Abstract

Sr1−xNdxCuOy thin films are grown on SrTiO3 substrates by rf-magnetron sputtering and pulsed-laser deposition. The sputter-deposited film with x=0 has an “infinite-layer” structure whose lattice constants are: α=0.390 nm and c=0.347 nm. When x is larger than 0.1, the films contain a phase of the Sr14CuO24O41 structure. The laser-deposited films of Sr1−xNdxCuOy with x≤.075 were single phase of the “infinite-layer” structure. The lattice parameter c decreased and the lattice parameter αincreased, as the Nd content, x, increased. The films with α=0.10 and 0.125 exhibited superconducting onset temperatures around 26 K. Weak Meissner signals were observed for these films at temperatures below 30 K.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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