Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-02-20
1991-05-28
Morgenstern, Norman
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505732, 505730, 427 62, 427 531, 427 541, 427314, B05D 306, B05D 512
Patent
active
050195522
ABSTRACT:
A method of depositing thin films by means of laser vaporization employs a long-pulse laser (Nd-glass of about one millisecond duration) with a peak power density typically in the range 10.sup.5 -10.sup.6 W/cm.sup.2. The method may be used to produce high T.sub.c superconducting films of perovskite material. In one embodiment, a few hundred nanometers thick film of YBa.sub.2 Cu.sub.3 O.sub.7-x is produced on a SrTiO.sub.3 crystal substrate in one or two pulses. In situ-recrystallization and post-annealing, both at elevated temperature and in the presence of an oxidizing agen
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Balooch Mehdi
Olander Donald K.
Russo Richard E.
Carnahan L. E.
Gaither Roger S.
King Roy V.
Morgenstern Norman
Moser William R.
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