Room-temperature ferromagnetic Mn-alloyed ZnO films obtained by pulsed laser desposition

被引：34

作者：

Diaconu, M.

Schmidt, H.

Hochmuth, H.

Lorenz, M.

Benndorf, G.

Spemann, D.

Setzer, A.

Esquinazi, P.

von Wenckstern, H.

Gross, R.

Schmid, H.

Mader, W.

Wagner, G.

Grundmann, M.

机构：

[1] Univ Leipzig, Inst Expt Phys 2, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

[2] Bayer Akad Wissensch, Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany

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

[4] Univ Leipzig, Inst Mineral Kristallog & Mat Wissensch, D-04275 Leipzig, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 307卷 / 02期

关键词：

ZnO; DMS; soft magnetic materials; micromagnetism;

D O I：

10.1016/j.jmmm.2006.04.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferromagnetic, semi-insulating Mn-alloyed ZnO films with a Curie temperature above 375 K have been grown by pulsed laser deposition on c-plane sapphire substrates. Antiferromagnetic coupling is revealed by temperature-dependent magnetization measurements. The antiferromagnetic coupling would be compatible with the observed weak ferromagnetisin by assuming that the magnetic moments order antiferromagnetically but nonparallel (canted). We find a clear correlation between coercivity and mosaicity of the ferromagnetic Mn-alloyed ZnO films and explain it on the basis of a coercivity mechanism known from soft magnetic materials. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：212 / 221

页数：10