ThuliumV1, Istex, Corpus, bibRecord, 000017

Ultrasonic velocity and attenuation studies of REBaCuO superconductors

Identifieur interne : 000017 ( Istex/Corpus ); précédent : 000016; suivant : 000018

Ultrasonic velocity and attenuation studies of REBaCuO superconductors

Auteurs : P. Venugopal Reddy ; S. Shekhar

Source :

Physica C: Superconductivity and its applications [ 0921-4534 ] ; 1993.

RBID : ISTEX:009E3BA7552F3FE6D240879116C9FDF12F6A2E03

English descriptors

KwdEn :
- Attenuation, Ceramic superconductors, Coarse grains, High superconducting transition temperature, Large number, Longitudinal, Longitudinal velocity, Phys, Present investigation, Shekhar, Sintered samples, Structural instabilities, Superconducting, Superconducting phase, Superconducting transition temperature, Superconductors, Temperature variation, Ultrasonic velocity, Venugopal reddy, Wang, Yening, Yening wang.
Teeft :
- Attenuation, Ceramic superconductors, Coarse grains, High superconducting transition temperature, Large number, Longitudinal, Longitudinal velocity, Phys, Present investigation, Shekhar, Sintered samples, Structural instabilities, Superconducting, Superconducting phase, Superconducting transition temperature, Superconductors, Temperature variation, Ultrasonic velocity, Venugopal reddy, Wang, Yening, Yening wang.

Abstract

Abstract: Ultrasonic longitudinal velocity and attenuation studies of a few REBaCuO superconductors over a temperature range 80–300 K have been carried out by the pulse transmission technique. The longitudinal velocity of most of the samples is found to decrease with decreasing temperature, attaining a minimum value at temperatures between 150 and 100 K. In the superconducting phase the velocity of all the samples is found to remain almost constant. The anomalous velocity variation has been explained as due to the presence of the large number of coarse grains of sufficient size in the sintered samples. Attenuation versus temperature plots of the samples are found to exhibit three peaks in the temperature regions 200 K, 150 K and 100 K and a suitable explanation for the observed behaviour has also been offered.

Url:

https://api.istex.fr/document/009E3BA7552F3FE6D240879116C9FDF12F6A2E03/fulltext/pdf

DOI: 10.1016/0921-4534(93)90641-3

Links to Exploration step

ISTEX:009E3BA7552F3FE6D240879116C9FDF12F6A2E03

Le document en format XML

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Ultrasonic velocity and attenuation studies of REBaCuO superconductors

Ultrasonic velocity and attenuation studies of REBaCuO superconductors

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