High-Resolution Electron Microscopy of the High-T<SUB>c</SUB> Superconductor Bi-Ca-Sr-Cu-O

doi:10.1143/JJAP.27.L573

High-Resolution Electron Microscopy of the High-T_c Superconductor Bi-Ca-Sr-Cu-O

The arrangement of cation atoms in the observed high-resolution images of a superconductor Bi-Ca-Sr-Cu-O is interpreted well with the Bi₄Ti₃O₁₂-type structure which consists of doubled slabs of the perovskite structure unit separated by double layers of Bi atoms. Some defects considered as intergrowths of polymorphic structures with different numbers of perovskite layers were observed. From the observed images and electron diffraction patterns, we proposed a structural model with an ordered arrangement of oxygen atoms.

Publication:

Japanese Journal of Applied Physics

Pub Date:

April 1988

DOI:

10.1143/JJAP.27.L573

Bibcode:

1988JaJAP..27L.573H

Keywords:

Bismuth Oxides;
Electron Microscopy;
High Temperature Superconductors;
Mixed Oxides;
Calcium Oxides;
Copper Oxides;
Perovskites;
Photomicrographs;
Strontium Compounds;
Solid-State Physics

ADS

High-Resolution Electron Microscopy of the High-Tc Superconductor Bi-Ca-Sr-Cu-O

Abstract

High-Resolution Electron Microscopy of the High-T_c Superconductor Bi-Ca-Sr-Cu-O