Structural and magnetic properties of DyMn2D6 synthesized under high deuterium pressure

被引：4

作者：

Paul-Boncour, V. ^{[1
]}

Filipek, S. M. ^{[2
]}

Wierzbicki, R. ^{[2
]}

Andre, G. ^{[3
]}

Bouree, F. ^{[3
]}

Guillot, M. ^{[4
]}

机构：

[1] CNRS, Lab Chim Met Terres Rares, F-94320 Thiais, France

[2] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[3] CEA Saclay, CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[4] CNRS MPI, LCMI, F-38042 Grenoble 9, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 01期

关键词：

NEUTRON-DIFFRACTION; R=Y; TB; ER;

D O I：

10.1088/0953-8984/21/1/016001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

DyMn2D6 has been prepared by applying high gaseous deuterium pressure on DyMn2. This phase is isostructural with other RMn2D6 (R = Y, Er) compounds and crystallizes with a K2PtCl6 type structure having an ordered anion and a partially disordered cation arrangement because Dy and half the Mn atoms are randomly substituted in the same 8c site. The reverse susceptibility follows a Curie-Weiss law with an effective moment of 10 mu(B) similar to that of DyMn2. Short range magnetic order, corresponding to ferromagnetic correlations, is observed in the neutron patterns up to 10 K and can be attributed to Dy-Dy interactions. The decomposition of the deuteride into Mn and DyD2, studied by thermal gravimetric analysis, occurs between 470 and 650 K. A further deuterium desorption takes place above 920 K.

引用

页数：6

共 14 条

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