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

页码：3289 / 3292

页数：4

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