Influence of sintering temperature on the superconducting properties of Zn-stearate-doped MgB2 tapes

	Influence of sintering temperature on the superconducting properties of Zn-stearate-doped MgB2 tapes
	Ma YW(马衍伟)
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2008
通讯作者	马衍伟
中文摘要	Correlation of phase purities, microstructure, J(c) and H-c2 with sintering temperature has been studied in Zn-stearate-doped MgB2/Fe tapes. All doped tapes show significant enhancements in J(c) and H-c2. TEM analyses revealed that strong flux pinning centers induced by grain boundaries and crystal defects as well as carbon substitution effect are responsible for the improvement of J(c) and H-c2 values. Although a high sintering temperature of 850 degrees C increases the grain size, improved grain connection can compensate for this disadvantage, giving the best J(c) of 2.0 x 10(4) A cm(-2) at 4.2 K and 10 T. On the other hand, tapes sintered at 900 degrees C have a lower J(c) due to the larger grain size and more MgO impurities.
学科主题	材料合成与加工工艺
收录类别	1
公开日期	2010-09-29
附注	Correlation of phase purities, microstructure, J(c) and H-c2 with sintering temperature has been studied in Zn-stearate-doped MgB2/Fe tapes. All doped tapes show significant enhancements in J(c) and H-c2. TEM analyses revealed that strong flux pinning centers induced by grain boundaries and crystal defects as well as carbon substitution effect are responsible for the improvement of J(c) and H-c2 values. Although a high sintering temperature of 850 degrees C increases the grain size, improved grain connection can compensate for this disadvantage, giving the best J(c) of 2.0 x 10(4) A cm(-2) at 4.2 K and 10 T. On the other hand, tapes sintered at 900 degrees C have a lower J(c) due to the larger grain size and more MgO impurities.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/351]
专题	电工研究所_超导材料及强磁场科学研究组_超导材料及强磁场科学研究组_期刊论文
推荐引用方式 GB/T 7714	Ma YW. Influence of sintering temperature on the superconducting properties of Zn-stearate-doped MgB2 tapes[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2008.
APA	马衍伟.(2008).Influence of sintering temperature on the superconducting properties of Zn-stearate-doped MgB2 tapes.SUPERCONDUCTOR SCIENCE & TECHNOLOGY.
MLA	马衍伟."Influence of sintering temperature on the superconducting properties of Zn-stearate-doped MgB2 tapes".SUPERCONDUCTOR SCIENCE & TECHNOLOGY (2008).