Crystal chemistry and magnetic properties of ternary compounds REAgxGa3-x (RE = Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu)

被引：3

作者：

Gumeniuk, R. ^{[1
]}

Prots, Yu. ^{[1
]}

Schnelle, W. ^{[1
]}

Burkhardt, U. ^{[1
]}

Kuz'ma, Yu. ^{[2
]}

Grin, Yu. ^{[1
]}

机构：

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

[2] Ivan Franko Natl Univ Lviv, Dept Analyt Chem, UA-79005 Lvov, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 469卷 / 1-2期

关键词：

Intermetallic compound; Crystal structure; X-ray diffraction; Magnetic susceptibility; POWDER DIFFRACTION DATA; AG-GA SYSTEM;

D O I：

10.1016/j.jallcom.2008.02.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystal structure of LuAg1.2Ga1.8 was determined from single-crystal X-ray diffraction data (structure type beta-YbAgGa2, space group Pnma, a = 6.8821(4) angstrom, b = 4.2695(2) angstrom, c = 10.1268(5) angstrom, R-F = 0.029, R-w = 0.031 for 595 unique reflections and 28 variables). Applying X-ray powder diffraction, the new compounds REAgxGa3-x (RE = Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu) were found to be isostructural. They possess homogeneity ranges at 873 K with x values between 1.04 and 1.35. From magnetic susceptibility data the compounds REAgxGa3-x (RE = Sm, Gd, Th, Dy, Ho, Er, Tm) are paramagnets and order antiferromagnetically at low temperatures, while LuAgGa.3, is a diamagnet. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：28 / 33

页数：6

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