Magnetic structure of Ho2CoGa8 determined by X-ray resonant magnetic scattering

被引：7
|
作者：
Adriano, C. [1 ]
Giles, C. [1 ]
Coelho, L. N. [1 ]
Faria, G. A. [1 ]
Pagliuso, P. G. [1 ]
机构：
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
来源：
PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 19期
关键词：
Intermetallic compound; Ho2CoGa8; X-ray magnetic scattering (XRMS); POLARIZATION; SUPERCONDUCTIVITY;
D O I：
10.1016/j.physb.2009.07.127
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report the low temperature magnetic structure of the Ho2CoGa8 intermetallic compound studied by X-ray magnetic scattering technique at the Brazilian Synchrotron Light Laboratory. We found that below T-N = 5.1 K Ho2CoGa8 has a commensurate antiferromagnetic structure with a propagation vector (eta) over bar = (1/2, 1/2, 1/2) and preliminary analysis indicated that the Ho magnetic moment points along the c-axis. The magnetic structure of this compound was obtained by measuring the strong dipolar resonant peak at the L-3 edge using polarization analysis. The magnetic structure and properties Ho2CoGa8 are found to be consistent with the general trend already seen for the Nd-, Tb-, and the Ce-based compounds from the RmMnIn3m+2n family (R = rare earth; M = Co, Rh, or Ir; m = 1,2: n = 0, 1). (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3289 / 3292
页数：4
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