Structural and magnetic properties of the double perovskite Sr2MnWO6

被引：49

作者：

Azad, AK ^{[1
]}

Ivanov, S

Eriksson, SG

Rundlöf, H

Eriksen, J

Mathieu, R

Svedlindh, P

机构：

[1] Univ Uppsala, Studsvik Neutron Res Lab, SE-61182 Nykoping, Sweden

[2] Karpov Inst Phys Chem, Moscow 103064, Russia

[3] Univ Gothenburg, Dept Inorgan Chem, SE-41296 Gothenburg, Sweden

[4] Angstrom Lab, SE-75121 Uppsala, Sweden

[5] Uppsala Univ, Dept Mat Sci, SE-75121 Uppsala, Sweden

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 237卷 / 02期

关键词：

neutron diffraction; double perovskites; crystal structure; magnetic materials; magnetic structure;

D O I：

10.1016/S0304-8853(01)00501-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nuclear and magnetic structure and the magnetic properties of the polycrystalline double perovskite Sr2MnWO6 have been studied. Rietveld analysis of neutron powder diffraction (NPD) data at T = 295 K shows that the sample is tetragonal (space group P4(2)/n, a = 8.0119(4) Angstrom, c = 8.0141(8) Angstrom). Some additional magnetic diffraction peaks were found in the NPD pattern at 10 K, which can be accounted for by anti ferromagnetic ordering of spins at the Mn sites. The magnetic unit cell is doubled in all three unit axes directions (a = b = 15.9984(8) Angstrom, c = 16.012(2) Angstrom) and the manganese moments are coupled antiferromagnetically along the unit cell axes. The total magnetic moment of Mn2+ is found to be 2.27(7) mu (B). The antiferromagnetic behaviour was confirmed from magnetisation measurements. The transition from a paramagnetic to an antiferromagnetic state takes place at 13.0 +/-0.1 K. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：124 / 134

页数：11

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