Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device
Patent
1982-03-26
1985-01-29
Bueker, Richard
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making electrical device
430315, 430319, 427 63, 427 99, 427250, 4272551, 4272557, 427259, 427282, 4273833, 427404, H01L 3922, H01L 3924
Patent
active
044966482
ABSTRACT:
During the preparation of a Josephson junction device, one of the steps for making a base electrode is to deposit a superconducting material on a substrate and to anneal the deposited material to make it a continuous homogeneous polycrystalline grain-like electrode material. Ordinarily, the base electrode and the counter electrode materials are deposited in a vacuum system at a vacuum pressure which is below one.times.10.sup.-6 torr to remove all contaminants such as oxygen, oxides of carbon and water vapor. It has been discovered that depositing conventional superconducting base electrode and counter electrode materials in the presence of an inert gas at much high vacuum pressures around 20.times.10-3 torr produce a superior lead-gold superconductive electrode which is substantially immune to thermal cycling.
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Bueker Richard
Scott Thomas J.
Sowell John B.
Sperry Corporation
Truex Marshall M.
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