Structure and magnetic properties of Sm2Rh3Sn5 - an intergrowth of TiNiSi- and NdRh2Sn4-related slabs

被引：4
|
作者：
Heying, Birgit [1 ]
Koesters, Jutta [1 ]
Hoffmann, Rolf-Dieter [1 ]
Heletta, Lukas [1 ]
Poettgen, Rainer [1 ]
机构：
[1] Univ Munster, Inst Anorgan & Analyt Chem, Corrensstr 30, D-48149 Munster, Germany
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2017年 / 72卷 / 10期
关键词：
intermetallics; magnetic properties; samarium; stannide; INTERMETALLIC COMPOUNDS; TERNARY STANNIDES; RE; SM; SUPERCONDUCTIVITY; SILICIDES; TRANSPORT; SEGMENTS; RHODIUM; PR;
D O I：
10.1515/znb-2017-0127
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The stannide Sm2Rh3Sn5 was obtained by arcmelting of the elements and subsequent annealing at 1070 K in a silica tube. Sm2Rh3Sn5 crystallizes with the orthorhombic Y2Rh3Sn5 type structure, space group Cmc2(1), Z = 4: a = 444.46(8), b = 2636.2(4), c = 718.3(1) pm, wR = 0.0711, 1761 F-2 values and 61 variables. The three crystallographically independent rhodium atoms show tricapped trigonal prismatic coordination by samarium and tin atoms. Sm2Rh3Sn5 can be considered as a simple 1:1 intergrowth structure of TiNiSi- and NdRh2Sn4-related slabs of compositions SmRhSn and SmRh2Sn4. Temperature dependent magnetic susceptibility data revealed van Vleck type behavior caused by the proximity of the exited H-6(7/2) state to the H-6(5/2) ground state of Sm3+, and an antifer-romagnetic ordering occurs at T-N = 3.5(5)K.
引用
收藏
页码：753 / 758
页数：6
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