Magnetic property investigations on mn-doped ZnO layers on sapphire

被引：96

作者：

Mofor, AC

El-Shaer, A

Bakin, A

Waag, A

Ahlers, H

Siegner, U

Sievers, S

Albrecht, M

Schoch, W

Izyumskaya, N

Avrutin, V

Sorokin, S

Ivanov, S

Stoimenos, J

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Semicond Technol, D-38106 Braunschweig, Germany

[2] Phys Tech Bundesanstalt, D-3300 Braunschweig, Germany

[3] Univ Ulm, Dept Semicond Phys, D-89081 Ulm, Germany

[4] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[5] Aristotle Univ Salonika, Dept Phys, Thessaloniki 54006, Greece

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 06期

关键词：

D O I：

10.1063/1.2007864

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The need for diluted magnetic semiconductors has stimulated research on Mn-doped ZnO. However, the type of magnetic coupling (ferro/para) in ZnMnO remains an issue of debate. We have investigated the magnetic properties of Mn-doped ZnO layers grown by molecular beam epitaxy. Some samples showed a hysteresis with remnant magnetization on the order of 10(-5) emu, thus eventually suggesting ferromagnetism. We observed that the critical influence of the substrate substantially affects magnetic property measurements. This has to be taken into account in order to clearly confirm ferromagnetism. In our case, after subtraction of the substrate effect, there is no evidence of a ferromagnetic behavior for the ZnMnO samples.

引用

页数：3

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