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Elastic constants of polycrystalline Y1Ba2Cu3Ox

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Abstract

We measured the elastic constants of polycrystalline Y1Ba2Cu3Ox with eleven oxygen contents varying from 6.2 to 6.9. Reported properties include sound velocities; bulk, shear, Young’s moduli; Poisson ratio; Debye temperature. After correction to the void-free state, the measurements fail to show a systematic dependence on oxygen content. Focusing on the bulk modulus, all measurements fall below an ionic-crystal model prediction, by 5–50%. We attribute this macroscopic softness to either microcracks or weak grain-boundary mechanical linkages. For the case x = 6.9, we suggest a set of intrinsic elastic constants.

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Authors and Affiliations

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

    Hassel Ledbetter

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  1. Hassel Ledbetter
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Ledbetter, H. Elastic constants of polycrystalline Y1Ba2Cu3Ox. Journal of Materials Research 7, 2905–2907 (1992). https://doi.org/10.1557/JMR.1992.2905

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  • DOI: https://doi.org/10.1557/JMR.1992.2905

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