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The degradation process in Tl2Ba2Ca1Cu2O10+x

✍ Scribed by K.D. Vernon-Parry; L.T. Romano; J.S. Lees; C.R.M. Grovenor

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 959 KB
Volume: 170
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(90)90005-y

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✦ Synopsis

Degradation

processes in 22 I2 thallium-based superconductors have been investigated using X-ray diffraction and electron microscopy techniques. It has been shown that the formation of amorphous or microcrystalline material by decomposition of the superconducting phase is followed by the crystallization of BaCOs and other oxide compounds.

The influence of preexisting BaCO, on the rate of this degradation process has also been studied, and the results indicate that the removal of this stable precursor compound is an important step in improving the long term stability of the 22 12 phase.

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