ULTRASONIC INVESTIGATIONS ON SUPERCONDUCTING YBA2CU3O7-DELTA SAMPLES OF DIFFERENT MICROSTRUCTURE

被引：90

作者：

EWERT, S

GUO, S

LEMMENS, P

STELLMACH, F

WYNANTS, J

ARLT, G

BONNENBERG, D

KLIEM, H

COMBERG, A

PASSING, H

机构：

[1] RHEIN WESTFAL TH AACHEN,INST WERKSTOFFE ELEKTROTECH,D-5100 AACHEN,FED REP GER

[2] PHILIPS GMBH,FORSCH LAB AACHEN,D-5100 AACHEN,FED REP GER

来源：

SOLID STATE COMMUNICATIONS | 1987年 / 64卷 / 08期

关键词：

CERAMIC MATERIALS - Acoustic Properties - ULTRASONIC WAVES - Transmission;

D O I：

10.1016/0038-1098(87)90609-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ultrasonic velocity and attenuation measurements down to 4. 2 K were performed on well characterized ceramic superconducting YBa//2Cu//3O//7// minus // delta samples of different microstructure. In fine grained samples of high volume density and excellent superconducting properties no softening in the sound velocity and no thermal hysteresis were found. A broad maximum at about 180 K and an anomaly near T//c were observed in the ultrasonic attenuation.

引用

页码：1153 / 1156

页数：4

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