Low-temperature phase diagram of Fe1+yTe studied using x-ray diffraction

被引：65

作者：

Koz, Cevriye ^{[1
]}

Rossler, Sahana ^{[1
]}

Tsirlin, Alexander A. ^{[1
,2
]}

Wirth, Steffen ^{[1
]}

Schwarz, Ulrich ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[2] NICPB, EE-12618 Tallinn, Estonia

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 09期

关键词：

SUPERCONDUCTIVITY; TRANSITION;

D O I：

10.1103/PhysRevB.88.094509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We used low-temperature synchrotron x-ray diffraction to investigate the structural phase transitions of Fe1+y Te in the vicinity of a tricitical point in the phase diagram. A detailed analysis of the powder diffraction patterns and temperature dependence of the peak widths in Fe1+y Te showed that two-step structural and magnetic phase transitions occur within the compositional range 0.11 <= y <= 0.13. The phase transitions are sluggish, indicating a strong competition between the orthorhombic and the monoclinic phases. We combine high-resolution diffraction experiments with specific heat, resistivity, and magnetization measurements and present a revised temperature-composition phase diagram for Fe1+y Te.

引用

页数：10

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