Ferromagnetism in Mn-doped ZnO due to impurity bands

被引：19

作者：

Nielsen, KW

Philipp, JB

Opel, M

Erb, A

Simon, J

Alff, L

Gross, R

机构：

[1] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany

[2] Univ Bonn, Inst Anorgan Chem, D-53117 Bonn, Germany

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2005年 / 37卷 / 05期

关键词：

D O I：

10.1016/j.spmi.2004.12.008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have prepared quasi-homoepitaxial Zn0.95Mn0.05O-films on ZnO substrates by pulsed laser deposition. The thin films were characterized by in situ RHEED during growth, X-ray diffraction and reflectometry, as well as transmission electron microscopy (TEM). The magnetic properties have been analyzed by SQUID magnetometry and by measuring the anomalous Hall effect. By varying the growth conditions (substrate temperature: 200-600 ° C, deposition atmospheres: Ar, O-2) a different concentration of impurities has been generated. Our results show that the films are electron doped and exhibit a ferromagnetic coupling that depends on the impurity concentration. © 2005 Elsevier Ltd. All rights reserved.

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页码：327 / 332

页数：6

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