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Superconductivity of La2−xAxCuO4+δ (A=Nd and Bi) prepared under high oxygen pressure

✍ Scribed by Y. Takeda; A. Sato; K. Yoshikawa; N. Imanishi; O. Yamamoto; M. Takano; Z. Hiroi; Y. Bando

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
157 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

La. A CuO 4 o with A=Nd and Bi was prepared under oxygen pressure between 0.2bar-60kbar. They showed large , x x ~o , ss s 60 h o butonl superconductmg volume fractions of 10% after being treated under high ox3gen p~c ure., k ar f r A=Nd y 0.5kbar for A=Bi. These fractions are roughly ten times as large as that of La.CuO.÷. treated at 60kbar. The known phase separation into nearly stoichiometric La,CuO. and superconducting La.CuO. =. see~n°s to be suppressed by the randomization of the catton stte m the rock salt layers.

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