Oxidizing-reducing effects in yttrium do
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E. Laxmi Narsaiah; U.V. Subba Rao; O. PeΓ±a; A. Perrin; M. Sergent
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Article
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1992
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Elsevier Science
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English
β 255 KB
A polycrystalhne sample of BhSr2Ca 0 aYe)2Cu20 a + ~ was prepared by a solid state reaction method The effect of annealing temperatures on TΒ’ 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 oxy