Process for preparing a thallium-containing superconductor
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United States of America Patent
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Jan 31, 1995
Issued Date -
N/A
app pub date -
Dec 9, 1992
filing date -
Apr 12, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is disclosed a process for preparing a thallium-containing superconductive composition. In the first step of the process, a mixture of an inorganic salt (such as potassium chloride) and a powder compositon is provided; the powder composition contains at least three separate compounds which, in combination, correspond to the stoichiometry of the super-conductor to be produced. This mixture is then charged to a closed container, raised to a temperature of from 800-959 degrees Centigrade, and heated for from about 1 to about 12 hours; thereafter, it is cooled to a temperature of 600 degrees Centigrade at a rate of at least 300 degrees Celsius per hour.
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