Geometric magnetic frustration in RE2O2S oxysulfides (RE = Sm, Eu and Gd)

被引：17

作者：

Biondo, V. ^{[1
]}

Sarvezuk, P. W. C. ^{[1
]}

Ivashita, F. F. ^{[1
]}

Silva, K. L. ^{[1
]}

Paesano, A., Jr. ^{[1
]}

Isnard, O. ^{[2
]}

机构：

[1] Univ Estadual Maringa, Dept Fis, Maringa, Parana, Brazil

[2] Univ Grenoble 1, CNRS, Inst Neel, F-38042 Grenoble, France

来源：

MATERIALS RESEARCH BULLETIN | 2014年 / 54卷

关键词：

Oxisulfides; Geometric magnetic frustration; X-ray diffraction; Mossbauer spectroscopy; Crystal structure; EUROPIUM; FLUCTUATIONS; ABSORPTION; SULFIDE;

D O I：

10.1016/j.materresbull.2014.03.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

RE2O2S oxysulfides (with RE = Sm, Eu and Gd) were prepared and characterized regarding their structural and magnetic properties. The compounds crystallized in the trigonal symmetry (space group P-3m/D(3)(3)d), with the lattice parameter varying linearly with the ionic radius of the RE cation. All these oxysulfides are magnetically frustrated and only the gadolinium sample showed magnetic order down to 3 K. The magnetic frustration is attributed to the spatial distribution of cations over the lattice, where the RE's magnetic moments occupy the sites forming a triangular plane lattice, perpendicular to the direction. This geometric magnetic frustration was firstly recognized for these oxysulfides. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：41 / 47

页数：7

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