Original scientific paper
An electron microscopy study of the "chain''-layer ordering in the YBCO-type high- TC superconductors
Ognjen Milat
; Institute of Physics of the University, Bijenička 46; POBox 304; HR-10001 Zagreb, Croatia
Abstract
Structures of a number of high-Tc superconducting cuprates related to the prototype YBCO compound, were studied by means of high resolution electron microscopy (HREM) and electron diffraction (ED). Commensurate superstructures or incommensurate modulated structures were induced by various metal atom substitutions for Cu in the ''chain''-layer and its ordering. Metal (M) and oxygen (O) atom ordering is confined mainly in the MO1-x-"chain'' layers, while the remaining part of the crystal structure, as well as the material's superconducting features, are hardly affected.
Keywords
Hrčak ID:
299566
URI
Publication date:
1.9.1995.
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