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Is Y1Ba2Cu3O7 stiff or soft?

Published online by Cambridge University Press:  31 January 2011

Hassel Ledbetter
Affiliation:
Institute of Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80303
Ming Lei
Affiliation:
Institute of Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Boulder, Colorado 80303
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Abstract

Using several measured and calculated physical properties, we argue that the high-Tc metal-oxide superconductor Y1Ba2Cu3O7 is elastically soft compared with BaTiO3 or SrTiO3. We conclude that the bulk modulus equals approximately 107 GPa, despite several high-pressure x-ray diffraction studies that report values up to approximately 200 GPa. Part of the argument uses an ionic-crystal-model calculation of the bulk modulus.

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Type
Materials Communications
Copyright
Copyright © Materials Research Society 1990

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