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Substitution effects in Bi2Sr2CaCu2O8+δ

✍ Scribed by Toshizo Fujita; Tsukasa Tomita

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
102 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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✦ Synopsis

A phase diagram including orthorhombic to pseudo-tetragonal structure change, antiferromagnetic ordering and superconducting transition is presented for Bi2Sr2Cal_zYzCu?OR~. In the case of substitution for Cu in Bi2Sr2CaCu2084KS, Fe suppresses superconductivity more effectively than Ni.

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Oxidizing-reducing effects in yttrium do
Oxidizing-reducing effects in yttrium doped Bi2Sr2CaCu2O8+δ (Bi-2212) superconductor
✍ E. Laxmi Narsaiah; U.V. Subba Rao; O. Peña; A. Perrin; M. Sergent 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 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 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 oxy