Magnetic order in a S=1/2 frustrated antiferromagnet on a square lattice

被引：1
作者：
Bombardi, A.
Paolasini, L.
Carretta, P.
Rodriguez-Carvajal, J.
Millet, P.
Caciuffo, R.
机构：
[1] Univ Politecn Marche, Ist Nazl Fis Mat, I-60131 Ancona, Italy
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] Univ Pavia, Ist Nazl Fis Mat, I-27100 Pavia, Italy
[4] Univ Pavia, Dipartimento Fis, I-27100 Pavia, Italy
[5] CEA Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France
[6] CNRS, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France
[7] Univ Politecn Marche, Dipartimento Fis Ingn Mat, I-60131 Ancona, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
layered compounds; quantum Heisenberg antiferromagnets; neutron diffraction;
D O I：
10.1016/j.jmmm.2003.12.498
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The results of low-temperature neutron diffraction measurements on a Li2VOSiO4 powder sample are reported. Neutron diffraction confirms the presence of collinear magnetic order, with a propagation vector (1/2 1/2 0). The refined ordered moment at 1.44 K is 0.62( 3) mu(B), in excellent agreement with the value expected for the square-lattice Heisenberg model (similar to 0.6 mu(B)). No evidence for a structural distortion between 2 and 5 K has been found. (C) 2004 Elsevier B. V. All rights reserved.
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页码：E659 / E660
页数：2
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