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Structure and Defects of Shock-Processed Ti and Y-Based Copper Oxide Superconductors

Published online by Cambridge University Press:  21 February 2011

R. Sharma ,
B. L. Ramakrishna ,
Z. Iqbal ,
N. N. Thadhani  and
N. Chawla
R. Sharma
Affiliation:
Department of Chemistry and Center for Solid State Science, Arizona State University, Tempe, AZ 85287.
B. L. Ramakrishna
Affiliation:
Department of Chemistry and Center for Solid State Science, Arizona State University, Tempe, AZ 85287.
Z. Iqbal
Affiliation:
Allied Signal Inc., Research and Technology, Morristown, NJ 07962
N. N. Thadhani
Affiliation:
Center for Explosives Technology Research, New Mexico Institute of Mining and Technology, Socorro, NM 87801.
N. Chawla
Affiliation:
Center for Explosives Technology Research, New Mexico Institute of Mining and Technology, Socorro, NM 87801.
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Abstract

We have studied the micro-structure of shock synthesized Tl2Ba2CuO6, shockprocessed YBa2Cu3O7 and 10% Ag-YBa2Cu3O7. The structural interpretation of the defects observed in these materials is discussed and compared with computer simulated images. Two planar defects with a stacking sequence of Cu-Ba-Tl-Ba-Cu and Cu-Ba-Tl-Tl-Ba-Cu-Tl-Cu-Ba-Tl-Tl-Ba-Cu in the Tl based oxide and a new defect sequence of Cu-Ba-Cu-Y-Y-Cu-Ba-Cu in the Y based oxides are reported here. An attempt is made to relate the change in superconducting properties observed to the defect structure present.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 183: Symposium E – High Resolution Electron Microscopy of Defects in Materials , 1990 , 381
Copyright
Copyright © Materials Research Society 1990

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