Formation of the structure of the superconducting phase of La-Sr-Cu-O by DC sputtering

Formation of the structure of the superconducting phase of La-Sr-Cu-O by DC sputtering

DC sputtered film samples of La-Sr-Cu are found to be noncrystalline. Annealing in air at temperatures as low as 350°C yields crystallization of the structure of the superconducting phase of La-Sr-Cu-O. We present X-ray spectra showing the continuous development of the La-Sr-Cu-O phase and a decreas...

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Veröffentlicht in:Journal of crystal growth 1987-12, Vol.85 (4), p.619-622
Hauptverfasser: Edelstein, A.S., Qadri, S.B., Holtz, R.L., Broussard, P.R., Claassen, J.H., Francavilla, T.L., Gubser, D.U., Lubitz, P., Skelton, E.F., Wolf, S.A.
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Sprache:eng
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Zusammenfassung:DC sputtered film samples of La-Sr-Cu are found to be noncrystalline. Annealing in air at temperatures as low as 350°C yields crystallization of the structure of the superconducting phase of La-Sr-Cu-O. We present X-ray spectra showing the continuous development of the La-Sr-Cu-O phase and a decrease in the c/ a ratio upon further annealing in air for temperatures up to 600°C.
ISSN:0022-0248
1873-5002
DOI:10.1016/0022-0248(87)90033-9