Structural transition and anisotropic properties of single-crystalline SrFe2As2

被引：155

作者：

Yan, J. -Q. ^{[1
]}

Kreyssig, A. ^{[1
,2
]}

Nandi, S. ^{[1
,2
]}

Ni, N. ^{[1
,2
]}

Bud'ko, S. L. ^{[1
,2
]}

Kracher, A. ^{[1
]}

McQueeney, R. J. ^{[1
,2
]}

McCallum, R. W. ^{[1
]}

Lograsso, T. A. ^{[1
]}

Goldman, A. I. ^{[1
,2
]}

Canfield, P. C. ^{[1
,2
]}

机构：

[1] Iowa State Univ, Ames Lab, US DOE, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.78.024516

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Platelike single crystals of SrFe2As2 as large as 3x3x0.5 mm(3) have been grown out of Sn flux. The SrFe2As2 single crystals show a structural phase transition from a high-temperature tetragonal phase to a low-temperature orthorhombic phase at T-o=198 K, and do not show any sign of superconductivity down to 1.8 K. The structural transition is accompanied by an anomaly in the electrical resistivity, Hall resistivity, specific heat, and the anisotropic magnetic susceptibility. In an intermediate temperature range from 198 to 160 K, single-crystal x-ray diffraction suggests a coexistence of the high-temperature tetragonal and the low-temperature orthorhombic phases.

引用

页数：4

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