Modulated Structure of the High-Tc Superconductor Bi-Pb-Ca-Sr-Cu-O Studied by High-Resolution Electron Microscopy and Electron Diffraction
- 1 October 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (10A) , L1783-1786
- https://doi.org/10.1143/jjap.28.l1783
Abstract
A new type of atomic displacive modulation in the incommensurate superconducting oxide Bi-Pb-Ca-Sr-Cu-O (2223 phase) has been studied by high-resolution electron microscopy and electron diffraction. The structure is orthorhombic with cell dimensions a=0.54, b=4.2 (∼8a) and c=3.71 nm. The structural modulation has been analyzed by assuming a commensurate cell with the dimension b=8a. The intensity distribution of superstructure reflections can be well explained by taking atomic displacive longitudinal and transverse waves into account.Keywords
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