Nearly ferromagnetic metals AFe4Sb12 (A = Ca, Sr, and Ba)

被引：57

作者：

Matsuoka, E ^{[1
]}

Hayashi, K

Ikeda, A

Tanaka, K

Takabatake, T

Matsumura, M

机构：

[1] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[2] Hiroshima Univ, N BARD, Ctr Mat Sci, Higashihiroshima 7398530, Japan

[3] Kochi Univ, Fac Sci, Kochi 7808520, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 05期

关键词：

skutterudite compounds; nearly ferromagnetic metals; spin fluctuations;

D O I：

10.1143/JPSJ.74.1382

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic, transport and thermal properties of alkaline-earth-filled skutterudites AFe(4)Sb(12) (A = Ca, Sr, Ba) are reported. All three compounds show maximum magnetic susceptibility and thermopower at 50K and a large electronic specific heat coefficient of 100mJ/molK(2). The electrical resistivity exhibits a shoulder at 70 K and follows quadratic temperature dependence below 9 K. These properties are the characteristics of a nearly ferromagnetic metal. The suppression of ferromagnefic spin fluctuations of the Fe 3d band by applying magnetic fields was manifested as a negative magneto-resistance between 50 and 80K.

引用

页码：1382 / 1385

页数：4

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