Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2

	Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2
	Ma YW(马衍伟)
刊名	NEW JOURNAL OF PHYSICS
	2008
通讯作者	马衍伟
中文摘要	EuFe2As2 is a member of the ternary iron arsenide family. Similar to BaFe2As2 and SrFe2As2, EuFe2As2 exhibits a clear anomaly in resistivity near 200 K. Here, we report the discovery of superconductivity in Eu0.7Na0.3Fe2As2 by partial substitution of the europium site with sodium. ThCr2Si2 tetragonal structure, as expected for EuFe2As2, is formed as the main phase for the composition Eu0.7Na0.3Fe2As2. Resistivity measurements reveal that the transition temperature T-c as high as 34.7 K is observed in this compound. The rate of T-c suppression with the applied magnetic field is 3.87 T K-1, giving an extrapolated zero-temperature upper critical field of 100 T. It demonstrates a very encouraging application of the new superconductors.
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	EuFe2As2 is a member of the ternary iron arsenide family. Similar to BaFe2As2 and SrFe2As2, EuFe2As2 exhibits a clear anomaly in resistivity near 200 K. Here, we report the discovery of superconductivity in Eu0.7Na0.3Fe2As2 by partial substitution of the europium site with sodium. ThCr2Si2 tetragonal structure, as expected for EuFe2As2, is formed as the main phase for the composition Eu0.7Na0.3Fe2As2. Resistivity measurements reveal that the transition temperature T-c as high as 34.7 K is observed in this compound. The rate of T-c suppression with the applied magnetic field is 3.87 T K-1, giving an extrapolated zero-temperature upper critical field of 100 T. It demonstrates a very encouraging application of the new superconductors.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/285]
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. Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2[J]. NEW JOURNAL OF PHYSICS,2008.
APA	马衍伟.(2008).Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2.NEW JOURNAL OF PHYSICS.
MLA	马衍伟."Superconductivity at 34.7 K in the iron arsenide Eu0.7Na0.3Fe2As2".NEW JOURNAL OF PHYSICS (2008).