Yb2BaCoO5 magnetic and crystal structure determination from neutron scattering

被引：5

作者：

Hernandez-Velasco, J ^{[1
]}

Saez-Puche, R

Rodriguez-Carvajal, J

机构：

[1] Univ Complutense, Fac Ciencias Quim, Dept Quim Inorgan, E-28040 Madrid, Spain

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 275卷

关键词：

antiferromagnetism; neutron diffraction; magnetic structure;

D O I：

10.1016/S0925-8388(98)00412-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetic and crystal structure of Yb2BaCoO5 have been studied from powder neutron diffraction. The compound crystallizes in the orthorhombic space group Pnma, with lattice parameters: a = 12.1745(2) Angstrom, b = 5.6594(1) Angstrom, c = 6.9993(1) Angstrom. Bulk magnetic measurements reveal a jump in the temperature dependence of the susceptibility around 10 K, which corresponds to the antiferromagnetic ordering of the Yb3+ and Co2+ sublattices which is fully confirmed with neutron diffraction data. From the later, a magnetic structure with an identical cell to the chemical one (k = 0) has been proposed to explain the onset of new reflections due to magnetic scattering that develop below T-N approximate to 9.4 K. The spin arrangement is described on the basis of C(x)A(z) symmetry modes for all magnetic sublattices. (C) 1998 Elsevier Science S.A.

引用

页码：651 / 656

页数：6

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