高圧力の科学と技術
Online ISSN : 1348-1940
Print ISSN : 0917-639X
ISSN-L : 0917-639X
特集 ― 高温超伝導体の新潮流―鉄系新超伝導体 ―
鉄系新高温超伝導体の電気抵抗と帯磁率の圧力効果
高橋 博樹岡田 宏成
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2009 年 19 巻 2 号 p. 123-128

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  Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on iron-based superconductor LaFePO and LaFeAsO1-xFx system. A steep increase in superconducting transition temperature (Tc) was observed for LaFePO and LaFeAsO1-xFx. Pressure-induced superconductivity was confirmed in undoped LaFeAsO and SrFe2As2 by electrical resistivity measurements under high pressure. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO, LaNiAsO and LaFeAsO1-xFx system, where the anisotropic decreases of the lattice constants were observed with applying pressure. Recent advance in the high pressure reserches for iron-based high Tc superconductors are also presented.

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© 2009 日本高圧力学会
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