Investigation the positive moments on the M-T curve of YBCO films measured by using zero-field cooling

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	Investigation the positive moments on the M-T curve of YBCO films measured by using zero-field cooling
	Guo, SQ ; Wang, FL ; Zhou, YL ; Zhao, BR ; Gao, J
刊名	CHINESE PHYSICS
	2002
卷号	11 期号:4 页码:379
关键词	HIGH-TEMPERATURE SUPERCONDUCTORS
ISSN号	1009-1963
通讯作者	Guo, SQ: Tsing Hua Univ, Dept Phys, Appl Superconduct Res Ctr, Beijing 100084, Peoples R China.
中文摘要	The superconducting transition of a YBCO film was measured by a MPMS-5 superconducting quantum interference device magnetometer, using a zero-field cooling process. The experimental results have shown that there are positive magnetic moment and positive peak on the M-T curve. We have proven that these anomalous behaviours are due to measurement error, but not phase transition. We have proposed a simple formula to explain and to calculate quantitatively these anomalous behaviours. It was found that, provided dH > 0.59H(p) (dH is the inhomogeneous field of the remnant field, H-p is the fully penetrated field of the measured sample), the experimental results will be positive, not negative. If dH greater than or equal to 2H(p), the experimental results will be symmetrical to their real negative values. From the M-T curve, which has positive moment and positive peak below T-c (superconducting transition temperature), we found a new possible method to obtain Hp of the measured sample.
收录类别	SCI
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40350]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Guo, SQ,Wang, FL,Zhou, YL,et al. Investigation the positive moments on the M-T curve of YBCO films measured by using zero-field cooling[J]. CHINESE PHYSICS,2002,11(4):379.
APA	Guo, SQ,Wang, FL,Zhou, YL,Zhao, BR,&Gao, J.(2002).Investigation the positive moments on the M-T curve of YBCO films measured by using zero-field cooling.CHINESE PHYSICS,11(4),379.
MLA	Guo, SQ,et al."Investigation the positive moments on the M-T curve of YBCO films measured by using zero-field cooling".CHINESE PHYSICS 11.4(2002):379.