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Elastic constants and microcracks in YBa2Cu3O7

Published online by Cambridge University Press:  03 March 2011

Yasuhide Shindo ,
Hassel Ledbetter  and
Hideaki Nozaki
Yasuhide Shindo
Affiliation:
Department of Materials Processing, Tohoku University, Sendai 980, Japan
Hassel Ledbetter
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80303-3328
Hideaki Nozaki
Affiliation:
Department of Mechanical Engineering, Tokyo National College of Technology, Hachioji 193, Japan
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Abstract

We analyze theoretically the effect of microcracks and voids on the apparent elastic constants of polycrystalline YBa2Cu3O7. Using measurements by Holcomb and Mayo, we calculate crack density and crack aspect ratio. We obtain reasonable intrinsic elastic constants. For the bulk modulus, for example, we predict values close to these obtained by neutron-diffraction studies: 123 GPa for a polycrystal and 122 GPa for a monocrystal.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 1 , January 1995 , pp. 7 - 10
Copyright
Copyright © Materials Research Society 1995

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References

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