Ferromagnetism in germanium clathrate:: Ba8Mn2Ge44

被引：50

作者：

Kawaguchi, T

Tanigaki, K

Yasukawa, M

机构：

[1] Osaka City Univ, Fac Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, Japan

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

[3] CRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 21期

关键词：

D O I：

10.1063/1.1328048

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A unique magnetic nanosystem, constructed from Ge-20 dodecahedrons and Mn, is presented, which shows a ferromagnetic transition around 10 K. In this system with the formula Ba8MnxGe46-x (x=1-2), the Mn atoms can be incorporated with accurate control in position of the crystal lattice. The spontaneous magnetization is approximately linearly proportional to the amount of Mn introduced and is maximized at x=2. Magnetic measurements reveal that the d electrons are almost localized on Mn atoms but also affected by conduction electrons spreading over the clathrate network. (C) 2000 American Institute of Physics. [S0003-6951(00)04547-2].

引用

页码：3438 / 3440

页数：3

共 10 条

[1] Synthesis and characterization of stable stoichiometric clathrates of silicon and germanium:: Cs8Na16Si136 and Cs8Na16Ge136 [J].