Low-temperature nuclear and magnetic structures of La2O2Fe2OSe2 from x-ray and neutron diffraction measurements

被引：52
作者：
Free, David G. [1 ]
Evans, John S. O. [1 ]
机构：
[1] Univ Durham, Dept Chem, Durham DH1 3LE, England
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 21期
基金：
英国工程与自然科学研究理事会;
关键词：
LAYERED PNICTIDE-OXIDES; PHYSICAL-PROPERTIES; SUPERCONDUCTIVITY; OXYCHALCOGENIDES; ORDER; PN; SB;
D O I：
10.1103/PhysRevB.81.214433
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper describes the low-temperature nuclear and magnetic structures of La2O2Fe2OSe2 by analysis of x-ray and neutron diffraction data. The material has been demonstrated to order antiferromagnetically at low temperatures, with T-N= similar to 90 K a propagation vector of k=(1/201/2), resulting in a spin arrangement similar to that in FeTe, despite there being no apparent lowering in symmetry of the nuclear structure.
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页数：7
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