Extended phase diagram in LaFe1-xNixAsO

Authors

S Jiang, Zhejiang University, China
C Wang, Zhejiang University, ChinaFollow
M He, Zhejiang University
J Yu, Zhejiang University, China
Q Tao, Zhejiang University, China
J H. Dai, Zhejiang University, China
Z A. Xu, Zhejiang University, China
G H. Cao, Zhejiang University

RIS ID

70096

Publication Details

Jiang, S., Wang, C., He, M., Yu, J., Tao, Q., Dai, J. H., Xu, Z. A. & Cao, G. H. (2010). Extended phase diagram in LaFe1-xNixAsO. Physica C: Superconductivity and its Applications, 470 (Suppl.1), S456-S457.

Abstract

LaFe1-xNixAsO samples in the whole range of x have been synthesized and characterized via X-ray diffraction, electrical and magnetic measurements. With increasing Ni content, the SDW ordering is drastically suppressed and then superconductivity emerges in a narrow range of 0:03 6 x 6 0:06. The normal state exhibits a resistivity minimum below a characteristic temperature. Such a semiconductor-like behavior can be seen in a wide range of 0:3 6 x 6 0:9, where no superconductivity is observed. At the other end ð0:9 6 x 6 1Þ, the Fe substitution for Ni suppresses the superconductivity in LaNiAsO.