Single crystal structure and magnetic properties of a new quaternary samarium-titanium oxyselenide:: Sm3Ti3Se2O8

被引：7

作者：

Meignen, V ^{[1
]}

Deudon, C ^{[1
]}

Lafond, A ^{[1
]}

Boyer-Candalen, C ^{[1
]}

Meerschaut, A ^{[1
]}

机构：

[1] Univ Nantes, UMR 6502 CNRS, Inst Mat Jean Rouxel, Lab Chim Solides, F-44322 Nantes 03, France

来源：

SOLID STATE SCIENCES | 2001年 / 3卷 / 1-2期

关键词：

samarium; titanium; selenium; oxygen; crystal structure; magnetism;

D O I：

10.1016/S1293-2558(00)01130-4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new compound Sm3Ti3Se2O8 has been synthesized by a solid state reaction of Sm2O3, TiO2, and TiSe2 at T=1000 degreesC. This compound crystallizes in the monoclinic symmetry, space group P2(1)/m (No. 11), with unit cell parameters: a = 9.7844(6), b = 3.8865(5), c = 13.330(1) Angstrom, and beta = 111.37(1)degrees Z = 2. Its crystal structure can be roughly described as small fragments [SmSe] of a rock-salt-type structure interconnected by a complex entity built up from the condensation of edge sharing [Ti-O] octahedra. Refinement for 1019 independent reflections and 73 Variables converged to the reliability factor R-F = 2.00 % (for 942 reflections satisfying the criterion I greater than or equal to 3 sigma (I)). Magnetic susceptibility of the title compound has been measured from 2 to 300 K and has shown a paramagnetic behavior of the van Vleck Sm3+ cation in the whole temperature range. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：189 / 194

页数：6

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