High-Resolution Transmission Electron Microscopy of Long-Period Structures of Various Phases in a Bi-Sr-Cu-O System
- 1 April 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (4A), L602
- https://doi.org/10.1143/jjap.28.l602
Abstract
Three nonsuperconducting phases (B to D) in a Bi-Sr-Cu-O system have long-period structures closely related to that of the superconducting phase A, Bi2Sr2CuO y . In phase B, the long periodicity is caused by the displacements of the (BiO)2 planes along the c axis. In both phases C and D, it is due to the formations of thin vertical planes of different local structures and compositions. These planes are straight and repeat regularly to form a commensurate long-period structure in phase C, while they repeat irregularly to form an incommensurate structure with wavy lattice planes in phase D.Keywords
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