Ferromagnetism in carbon-doped Mn5Si3 films

被引：25

作者：

Gajdzik, M ^{[1
]}

Sürgers, C ^{[1
]}

Kelemen, M ^{[1
]}

von Löhneysen, H ^{[1
]}

机构：

[1] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 09期

关键词：

D O I：

10.1063/1.372597

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of carbon doping on the structural and magnetic properties of Mn5Si3Cx films is investigated for different substrate temperatures T-S and concentrations x. Samples with x approximate to 0.75 prepared at T-S=650-750 K exhibit ferromagnetic order with enhanced ordering temperatures T-C well above room temperature in contrast to the undoped antiferromagnetic Mn5Si3 compound. Structural analysis shows that C is incorporated interstitially in the hexagonal Mn5Si3-type structure with a lattice expansion with respect to the undoped compound. The enhanced ferromagnetic order is presumably not simply due to a change of the interatomic Mn-Mn distances but due to a change of the electronic structure and/or exchange interactions. (C) 2000 American Institute of Physics. [S0021-8979(00)91808-5].

引用

页码：6013 / 6015

页数：3

共 10 条

[1] THE SPATIAL-DISTRIBUTION OF MAGNETIZATION DENSITY IN MN5GE3 [J].