Specific heat investigation of the magnetic ordering in two frustrated spin-chain oxides:: Ca3Co2O6 and Ca3CoRhO6

被引：50

作者：

Hardy, V ^{[1
]}

Lees, MR

Maignan, A

Hébert, S

Flahaut, D

Martin, C

Paul, DM

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Lab CRISMAT, UMR 6508, F-14050 Caen, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 33期

关键词：

D O I：

10.1088/0953-8984/15/33/307

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Specific heat measurements were carried out on the closely related spin-chain oxides Ca3Co2O6 and Ca3CoRhO6. Both compounds consist of Ising magnetic chains. that are arranged on a triangular lattice. The spin coupling along and between the chains is ferromagnetic and antiferromagnetic, respectively. Geometrical frustration is expected from the combination of these magnetic features. The present study reports that the specific heat data of these compounds exhibit similarities in the spin-freezing process at low T, whereas striking differences exist in the antiferromagnetic interchain ordering at higher T. These results are discussed in connection with previous magnetization and neutron diffraction data.

引用

页码：5737 / 5746

页数：10

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