Second harmonic generation as a sensitive technique for estimatingHc1of highTcmaterials
作者:
Shailendra Kumar,
S. B. Roy,
A. K. Pradhan,
P. Chaddah,
Ram Prasad,
N. C. Soni,
期刊:
Journal of Applied Physics
(AIP Available online 1993)
卷期:
Volume 73,
issue 3
页码: 1539-1541
ISSN:0021-8979
年代: 1993
DOI:10.1063/1.354049
出版商: AIP
数据来源: AIP
摘要:
A simple and interesting technique for measuring theHc1of the superconducting grains in bulk highTcsuperconductor (HTSC) samples is presented herein. This technique takes advantage of interesting history effects observed in the nonlinear magnetic response of HTSC samples. The hysteretic second harmonic magnetization shows sharp structure at low applied fields due to the magnetic flux trapped inside the grains. This feature is used to track the penetration of magnetic field inside the superconducting granular regions.
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