Suppression of superconducting critical current density by small flux jumps in MgB2 thin films

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	Suppression of superconducting critical current density by small flux jumps in MgB2 thin films
	Zhao, ZW ; Li, SL ; Ni, YM ; Yang, HP ; Liu, ZY ; Wen, HH ; Kang, WN ; Kim, HJ ; Choi, EM ; Lee, SI
刊名	PHYSICAL REVIEW B
	2002
卷号	65 期号:6
关键词	GROWTH
ISSN号	1098-0121
通讯作者	Wen, HH (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China.
中文摘要	By doing magnetization measurements during magnetic field sweeps on thin films of the new superconductor MgB2, it is found that in a low-temperature and low-field region small flux jumps are taking place. This effect strongly Suppresses the central magnetization peak leading to reduced nominal superconducting critical current density at low temperatures, A borderline for this effect to occur is determined on the field-temperature (H-T) phase diagram. It is suggested that the small size of the flux jumps in films is due to the higher density of small defects and the relatively easy thermal diffusion in thin films in comparison with bulk samples.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/54141]
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	Zhao, ZW,Li, SL,Ni, YM,et al. Suppression of superconducting critical current density by small flux jumps in MgB2 thin films[J]. PHYSICAL REVIEW B,2002,65(6).
APA	Zhao, ZW.,Li, SL.,Ni, YM.,Yang, HP.,Liu, ZY.,...&Lee, SI.(2002).Suppression of superconducting critical current density by small flux jumps in MgB2 thin films.PHYSICAL REVIEW B,65(6).
MLA	Zhao, ZW,et al."Suppression of superconducting critical current density by small flux jumps in MgB2 thin films".PHYSICAL REVIEW B 65.6(2002).