Magnetic and transport properties of iron-platinum arsenide Ca10(Pt4-δAs8)(Fe2-xPtxAs2)5 single crystal

被引：24

作者：

Ding, Qing-Ping ^{[1
,2
]}

Tsuchiya, Yuji ^{[1
]}

Mohan, Shyam ^{[1
]}

Taen, Toshihiro ^{[1
]}

Nakajima, Yasuyuki ^{[1
,2
]}

Tamegai, Tsuyoshi ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] Transformat Res Project Iron Pnictides TRIP, JST, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 10期

关键词：

PHASE-DIAGRAM; FLUX-CREEP; SUPERCONDUCTIVITY; TEMPERATURE; DEPENDENCE;

D O I：

10.1103/PhysRevB.85.104512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report superconducting properties of single crystalline Ca-10(Pt4-delta As8)(Fe2-xPtxAs2)(5) by x-ray diffraction, magnetization, resistivity, and magneto-optical imaging measurements. The magnetization measurements reveal a fish-tail hysteresis loop and relatively high critical current density J(c) similar to 0.8 x 10(5) A/cm(2) at low temperatures. The exponential temperature dependence of J(c), which arises from the nonlinear effective flux-creep activation energy, has been observed. The upper critical field determined by resistive transition shows a relatively large anisotropy. The magneto-optical images reveal a homogenous current flow within the crystal.

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页数：6

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