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Temperature Dependent Structural Change of YBa 2 Cu 3 O 7—y Single Crystals Studied by X‐Ray Diffraction
Author(s) -
Shi L.,
Zhou G. E.,
Feng Y.,
Huang Y. S.,
Fang Y.,
Xu M.,
Zhang Y. H.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199710)203:2<305::aid-pssb305>3.0.co;2-b
Subject(s) - diffraction , x ray crystallography , atmospheric temperature range , crystallography , materials science , superconductivity , transition temperature , single crystal , condensed matter physics , lattice (music) , high temperature superconductivity , structural change , superconducting transition temperature , crystal structure , chemistry , optics , thermodynamics , physics , acoustics , macroeconomics , economics
Superconducting single crystals of YBa 2 Cu 3 O 7— y were studied by X‐ray diffraction over a temperature range from 297 to 77 K. Changes of profiles along a , b and c directions of the crystal were observed, respectively. It is found that the profile of the (001) diffraction has undergone dramatic changes in the temperature region from 242 to 142 K. Meanwhile, there is no observable change along the a and b directions of the single crystal. After the temperature of 98 K, the (007) diffraction peak obviously begins to broaden. The results indicate several minor structural changes of the YBCO lattice between room temperature and the superconducting transition.