Journal ArticleDOI
Ageing effects on thermal conductivity of YBa2Cu3O7−y
TLDR
In this article, a modified BRT type analysis points to an increase in point defects and planar defects in YBa 2 Cu 3 O 7−y (YBCO) samples.Abstract:
Significant reduction in the magnitude of thermal conductivity of a sample of YBa 2 Cu 3 O 7−y (YBCO) has been observed when the sample was stored in dry air for a period of one year, though it was reoxygenated to restore superconductivity. A modified BRT type analysis points to an increase in point defects and planar defects.read more
References
More filters
Journal ArticleDOI
Theory of the Thermal Conductivity of Superconductors
TL;DR: In this article, a theory of the thermal conductivity of superconductors is presented, based on the theory of super conductivity due to Bardeen, Cooper, and Schrieffer, which is treated as quasi-particles, allowing a Boltzmann equation to be set up.
Journal ArticleDOI
Phase diagram of the superconducting oxide YBa2Cu3O6+ delta.
TL;DR: A mean-field model is fit to the experimental data, and suggests that the second type of diagram is correct, and the variation of the oxygen partial pressure with delta and t is discussed.
Journal ArticleDOI
Lattice thermal conductivity of YBa2Cu3O7−δ
TL;DR: In this paper, a systematic study of the ab-plane thermal conductivity on single crystal and liquid-phase processed (LPP) specimens of YBa 2 Cu 3 O 7−δ (δ≤0.16) in the temperature range 10 K≤ T ≤300 K was performed.
Journal ArticleDOI
Thermal conductivity of YBa 2 Cu 3 O 7 from 7 K to 260 K
TL;DR: In this paper, thermal conductivity of YBa2Cu3O7 was measured on samples of a few mm thickness and the experimental set up was described and results discussed, pointing towards a contribution to thermal resistivity from three-phonon Umklapp processes.