Temperature dependence of the elastic and inelastic moduli of YBa2Cu3O7−δ ceramics
M. U. KalanovInstitute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanTuymurod KhaidarovInstitute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanM. S. PaizullakhanovInstitute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
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Аннотация
Elastic and inelastic moduli of the superconducting yttrium-barium oxide ceramics YBa2Cu3O7−δ (YBCO) were studied using the ultrasonic resonance technique. In the range from room temperature up to the temperature of the ortho-tetra phase transition, the elastic and inelastic moduli of YBCO samples exhibit a number of anomalies. It is shown that these features are related to the behavior of active oxygen in the ceramics, the phase inhomogeneity of the material, and the phase transitions.
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