LOW-TEMPERATURE TORSION PENDULUM MEASUREMENTS ON YBCO SUPERCONDUCTORS

被引：4
|
作者：
DEVOS, P [1 ]
DEBATIST, R [1 ]
CORNELIS, J [1 ]
SERVAES, F [1 ]
机构：
[1] VLAAMSE INSTELLING TECHNOL ONDERZOEK, DIV MAT, B-2400 MOL, BELGIUM
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 211卷
关键词：
D O I：
10.1016/0925-8388(94)90501-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report low temperature torsion pendulum measurements on two types of YBa2Cu3O7-delta superconducting samples made from different precursors. The internal friction and modulus of the samples show in some aspects different behaviour than reported in the literature so far: a broad maximum of the internal friction around room temperature and a strong reduction of the anomalies near T-c. In addition, in both samples a peak becomes apparent when the samples are cooled below a temperature around T-c. The maximum for this peak is at 145 and 200 K for the two samples (for a frequency of about 10 Hz). Possible mechanisms for the peaks are discussed; however, details of the exact mechanism for these anomalies remain rather unclear.
引用
收藏
页码：276 / 278
页数：3
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