Low-dimensional ferromagnetic properties of SrCuV2O7 and BaCuV2O7

被引：11

作者：

Belik, AA ^{[1
]}

Azuma, M

Matsuo, A

Kindo, K

Takano, M

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] PRESTO, JST, Kawaguchi, Saitama 3320012, Japan

[3] Osaka Univ, KYOKUKEN, Toyonaka, Osaka 5608531, Japan

来源：

INORGANIC CHEMISTRY | 2005年 / 44卷 / 10期

关键词：

D O I：

10.1021/ic050164m

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystal structure of isostructural SrCuV2O7 and BaCuV2O7 consists of one-dimensional (1D) zigzag chains of Cu atoms with next-nearest-neighbor interaction. The main intrachain interaction was found to be ferromagnetic and estimated at 4.6 K (Hamiltonian H∼ -2J). SrCuV2O7 and BaCuV2O7 are new examples in the scanty family of 1D ferromagnets. Isothermal magnetization measurements at 0.08 K and specific heat data showed that MCuV2O7 exhibits antiferromagnetic long-range ordering at T-N = 1.36 K for SrCuV2O7 and T-N = 1.47 K for BaCuV2O7. Spin-flop transitions were observed in the antiferromagnetic state at 0.08 K near 0.5 kOe in SrCuV2O7 and 2 kOe in BaCuV2O7. In air, SrCuV2O7 and BaCuV2O7 melted incongruently above 983 and 1018 K, respectively.

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页码：3762 / 3766

页数：5

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