Optical and magnetic properties of Zn0.9-xCo0.1O:Alx thin films

被引：16

作者：

Samanta, K. ^{[1
,2
]}

Bhattacharya, P. ^{[3
]}

Duque, J. G. S. ^{[4
]}

Iwamoto, W. ^{[4
]}

Rettori, C. ^{[4
]}

Pagliuso, P. G. ^{[4
]}

Katiyar, R. S. ^{[1
,2
]}

机构：

[1] Univ Puerto Rico, Dept Phys, San Juan, PR 00931 USA

[2] Univ Puerto Rico, Inst Func Nanomat, San Juan, PR 00931 USA

[3] Fisk Univ, Dept Phys, Nashville, TN 37209 USA

[4] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 147卷 / 7-8期

关键词：

dilute magnetic semiconductors (DMS); optical properties;

D O I：

10.1016/j.ssc.2008.05.031

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The high-T-c ferromagnetic property in Co-doped ZnO (ZCO), mediated by donor impurity band was tested by controlled introduction of shallow donors (Al) in the Zn0.9-xCo0.1O : Al-x (x = 0.005 and 0.01) thin films. The saturation magnetization for the 10% Co-doped ZnO (4 emu/cc) at 300 K reduces (similar to 0.8 emu/cc) due to Al doping. The resistivity drops abruptly, from similar to 10(3) Omega-cm for the ZCO film to 0.033 and 0.02 Omega cm for the 0.5% and 1.0% Al doped ZCO samples, respectively. The XPS measurements did not show any signature of metallic CO Clusters formation in these samples. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：305 / 308

页数：4

共 24 条

[1] Absence of ferromagnetism in Al-doped Zn0.9Co0.10O diluted magnetic semiconductors [J].