Mossbauer studies of Ba(Fe1-xNix)2As2

被引：19

作者：

Nowik, Israel ^{[1
]}

Felner, Israel ^{[1
]}

Ni, Ni ^{[2
,3
]}

Bud'ko, Sergey L. ^{[2
,3
]}

Canfield, Paul C. ^{[2
,3
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] US DOE, Ames Lab, Ames, IA 50011 USA

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2010年 / 22卷 / 35期

基金：

以色列科学基金会;

关键词：

D O I：

10.1088/0953-8984/22/35/355701

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present detailed Fe-57 Mossbauer effect spectroscopy (MS) measurements at various temperatures for Ba(Fe1-xNix)(2)As-2. The isomer shift values for all samples are in the range of 0.42 +/- 0.02 mm s(-1), indicating a typical metallic state of divalent Fe ions. The MS spectra of the magnetic samples (up to x = 0.024) are well reproduced by spin density waves subspectra. Both the magnetic ordering temperatures T-M and the average magnetic hyperfine fields H-eff, decrease with x. The H-eff values scale linearly with T-M. For higher x values the samples become superconducting and the MS spectra below and above T-C are almost identical, indicating that the MS technique are not sensitive enough to the superconducting transition.

引用

页数：4

共 13 条

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