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Elastic constants and microcracks in YBa2Cu3O7

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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.

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Authors and Affiliations

  1. Department of Materials Processing, Tohoku University, 980, Sendai, Japan

    Yasuhide Shindo

  2. Materials Science and Engineering Laboratory, National Institute of Standards and Technology, 80303-3328, Boulder, Colorado, USA

    Hassel Ledbetter

  3. Department of Mechanical Engineering, Tokyo National College of Technology, Hachioji 193, Japan

    Hideaki Nozaki

Authors
  1. Yasuhide Shindo
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  2. Hassel Ledbetter
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  3. Hideaki Nozaki
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Shindo, Y., Ledbetter, H. & Nozaki, H. Elastic constants and microcracks in YBa2Cu3O7 . Journal of Materials Research 10, 7–10 (1995). https://doi.org/10.1557/JMR.1995.0007

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  • DOI: https://doi.org/10.1557/JMR.1995.0007

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