Superconductivity Near 50 K in a Bi-La-Ca-Cu-O System

1 May 1989

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 28 (5A) , L778
https://doi.org/10.1143/jjap.28.l778

Abstract

A new oxide superconductor has been found in the Bi-La-Ca-Cu-O system. The maximum onset temperature and zero resistance temperature were 52 K and 21 K, respectively, obtained for a nominal composition of Bi₂La_0.5Ca_3.5Cu₃O_x ceramics sintered at 830°C for 110 h in air. The powder X-ray diffraction patterns of this ceramic were well indexed by a tetragonal symmetry with a=0.54 nm and c=2.98 nm, which is similar to that of Bi₂Sr₂CaCu₂O_x ceramics.

Keywords

This publication has 4 references indexed in Scilit:

A New Bismuth-Containing Cuprate, Bi₂LaCaCuO_6.5+y, as an Insulator Phase of Superconductor Bi₂Sr₂CuO_6+y
Japanese Journal of Applied Physics, 1988
A New High-T_c Oxide Superconductor without a Rare Earth Element
Japanese Journal of Applied Physics, 1988
Superconductivity in the Bi - Sr - Cu - O system
Zeitschrift für Physik B Condensed Matter, 1987
Superconductivity in the Bi-Sr-Cu-O System
Japanese Journal of Applied Physics, 1987