Crystal structure and magnetic properties of the R6Si4Se17 (R = La and Ce) compounds

被引：1

作者：

Marchuk, O. V. ^{[2
]}

Daszkiewicz, M. ^{[1
]}

Gulay, L. D. ^{[3
]}

Kaczorowski, D. ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

[2] Volyn Natl Univ, Dept Inorgan & Phys Chem, UA-43009 Lutsk, Ukraine

[3] Volyn Natl Univ, Dept Ecol & Protect Environm, UA-43009 Lutsk, Ukraine

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 528卷

关键词：

Chalcogenides; Rare earth compounds; Si compounds; Se compounds; Crystal structure; X-ray diffraction; Magnetic properties; SM COMPOUNDS; PR; ND;

D O I：

10.1016/j.jallcom.2012.03.026

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 the R(6)Si(4)Se(1)7 (R = La and Ce) selenides was studied by means of X-ray powder and single crystal diffraction. The magnetic behaviour of the Ce-based compound was determined through SQUID magnetometry. The two materials crystallize with the Ce6Si4S17 structure type (space group P (1) over bar, Pearson symbol aP54). Their unit cells comprise as many as six inequivalent positions of the rare-earth atoms. The compound Ce6Si4Se17 exhibits Curie-Weiss paramagnetism with no hint at any magnetic ordering down to 1.72 K. The magnetic susceptibility data indicates that the Ce ions in this compound may have fluctuating valence character. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：99 / 102

页数：4

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