Elastic constants of high temperature superconductor YBa2Cu3Ox

Yasuhide Shindo; Naoki Niwa; Hideaki Nozaki; Hassel M. Ledbetter

doi:10.2320/jinstmet1952.59.3_258

Elastic constants of high temperature superconductor YBa₂Cu₃O_x

Yasuhide Shindo, Naoki Niwa, Hideaki Nozaki, Hassel M. Ledbetter

ENG - Materials Processing

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the defect-free elastic constants of high temperature ceramic superconductor YBa₂Cu₃O_x from measured elastic constants of bulk YBa₂Cu₃O_x which contains numerous microcracks and voids. Defect-free elastic constants represent long-wavelength acoustic phonons and relate to a variety of solid-state-phenomena such as Debye temperature, thermal expansivity and theoretical strength. By the use of the self-consistent method or the differential method, we eliminate the effect of random distribution of microcracks on the elastic constants of YBa₂Cu₃O_x. The scattered-plane-wave method is also used to eliminate the effect of voids and then obtain the defect-free elastic constants. Numerical calculations are carried out and the influence of the microcracks and the voids on the elastic constants of YBa₂Cu₃O_x is discussed in detail.

Original language	English
Pages (from-to)	258-262
Number of pages	5
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	59
Issue number	3
DOIs	https://doi.org/10.2320/jinstmet1952.59.3_258
Publication status	Published - 1995

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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AU - Niwa, Naoki

AU - Nozaki, Hideaki

AU - Ledbetter, Hassel M.

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AB - We calculate the defect-free elastic constants of high temperature ceramic superconductor YBa2Cu3Ox from measured elastic constants of bulk YBa2Cu3Ox which contains numerous microcracks and voids. Defect-free elastic constants represent long-wavelength acoustic phonons and relate to a variety of solid-state-phenomena such as Debye temperature, thermal expansivity and theoretical strength. By the use of the self-consistent method or the differential method, we eliminate the effect of random distribution of microcracks on the elastic constants of YBa2Cu3Ox. The scattered-plane-wave method is also used to eliminate the effect of voids and then obtain the defect-free elastic constants. Numerical calculations are carried out and the influence of the microcracks and the voids on the elastic constants of YBa2Cu3Ox is discussed in detail.

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Elastic constants of high temperature superconductor YBa₂Cu₃O_x

Abstract

ASJC Scopus subject areas

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