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Oxidizing-reducing effects in yttrium doped Bi2Sr2CaCu2O8+δ (Bi-2212) superconductor

✍ Scribed by E. Laxmi Narsaiah; U.V. Subba Rao; O. Peña; A. Perrin; M. Sergent

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
255 KB
Volume
15
Category
Article
ISSN
0921-5107

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✦ Synopsis

A polycrystalhne sample of BhSr2Ca 0 aYe)2Cu20 a + ~ was prepared by a solid state reaction method The effect of annealing temperatures on T¢ both m oxygen flow and secondary vacuum were investigated using a.c. susceptlblhty measurements The onset of T~ increases from 60 K to 82 K as a result of oxygen anneahng. The results obtained are explained on the basis of a small change in oxygen content and/or average oxidatton state of copper

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