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Influence of γ- Irradiation on the Phase Structure of Yba 2Cu 3O7-x

Published online by Cambridge University Press:  18 March 2011

I. Khidirov ,
K. Baktibaev  and
U. Gafurov
I. Khidirov
Affiliation:
Institute of Nuclear Physics, Tashkent, Ulugbek, Uzbekistan
K. Baktibaev
Affiliation:
Institute of Nuclear Physics, Tashkent, Ulugbek, Uzbekistan
U. Gafurov
Affiliation:
Institute of Nuclear Physics, Tashkent, Ulugbek, Uzbekistan
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Abstract

The influence of γ - irradiation on the structure of both superconducting and non-superconducting non-stoichiometric ceramics YBa 2 Cu 3 O 7−x by the neutron diffraction method has been investigated.

The results caused due to the γ-irradiation of a powder sample YBa2Cu3O6.98 in evacuated ampoule crystalline lattice distortion can manifest themselves when content of O atoms decreases up to (7-x ) 6,64. The O atoms move away from O(1) and O(4) position mainly during this process. The Meissner effect does not appear. The lattice parameters are changed in an irradiated non -stoichoimetric sample mainly due to arising radiation defects.

Keywords

superconducting ceramicsphase structuregamma-irradiationneutron diffraction method
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 659: Symposium II – High-Temperature Superconductors-Crystal Chemistry, Processing & Properties , 2000 , II9.21
Copyright
Copyright © Materials Research Society 2001

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References

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