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New superconducting Pb-based 1212 cuprates containing boron, (Pb0.5B0.5)(Sr2−xBax)(Y1−yCay)Cu2Oz

✍ Scribed by Hiroyuki Sasakura; Yoshiya Akagi; Shigeki Tsukui; Motoaki Adachi


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
173 KB
Volume
468
Category
Article
ISSN
0921-4534

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The influence of oxygen pressure upon superconducting properties of lead-based 1212 copper oxides Pbt\_xSr2Cao.sYo.sCu2+xO7+ 6 has been investigated as a function of time and annealing temperature. Annealings of (Pbo.7Cuo.3) Sr2Cao.sYo.5Cu207 + 6 at 400 ° C for 10 h show thai this material becomes s