Crystallographic and magnetic properties of the U2.1Fe2Sn0.9 ternary stannide

被引：7

作者：

Gonçalves, AP

Noël, H

Waerenborgh, JC

机构：

[1] Inst Tecnol & Nucl, Dept Quim, P-2686953 Sacavem, Portugal

[2] Univ Rennes 1, UMR CNRS 6511, Chim Solide & Inorgan Mol Lab, F-35042 Rennes, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 251卷 / 01期

关键词：

spin-fluctuation systems; single-crystal x-ray diffraction; U2Fe2Sn; uranium intermetallic compound; U3Si2-type structure;

D O I：

10.1016/S0304-8853(02)00002-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A sample with global composition U2.2Fe2Sn was arc melted and annealed at 750 degreesC. The crystal structure of the main phase obtained was refined assuming a tetragonal ordered version of the U3Si2-type structure (space group P4/mbm) down to a residual value of R-Bragg = 0.0868 (R-F = 0.0584). A final U2.1Fe2Sn0.9 composition was obtained from the refinement. Magnetization, AC-susceptibility and Fe-57 Mossbauer results point to the existence of a small concentration of the U5Sn4 ferromagnetic impurity in the sample. No further magnetic transitions were observed down to 2 K. A strong hybridization of the 4s and/or 3d electrons of Fe is suggested from the low isomer shift values of Fe. A broad maximum in the magnetization at similar to 125 K is observed, indicating spin-fluctuation features in this system. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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