Critical field measurements in superconductors using ac inductive techniques
作者:
S. A. Campbell,
J. B. Ketterson,
G. W. Crabtree,
期刊:
Review of Scientific Instruments
(AIP Available online 1983)
卷期:
Volume 54,
issue 9
页码: 1191-1198
ISSN:0034-6748
年代: 1983
DOI:10.1063/1.1137548
出版商: AIP
数据来源: AIP
摘要:
The ac in‐phase and out‐of‐phase response of type II superconductors is discussed in terms of dc magnetization curves. Hysteresis in the dc magnetization is shown to lead to a dependence of the ac response on the rate at which an external field is swept. This effect allows bothHc1andHc2to be measured by ac techniques. A relatively simple mutual inductance bridge for making such measurements is described in the text, and factors affecting bridge sensitivity are discussed in the Appendix. Data for the magnetic superconductor ErRh4B4obtained using this bridge are reported.
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