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Type: Artigo de periódico
Title: Optical and magnetic properties of Zn0.9-xCo0.1O : Al-x thin films
Author: Samanta, K
Bhattacharya, P
Duque, JGS
Iwamoto, W
Rettori, C
Pagliuso, PG
Katiyar, RS
Abstract: 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.
Subject: dilute magnetic semiconductors (DMS)
optical properties
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Solid State Communications. Pergamon-elsevier Science Ltd, v. 147, n. 41858, n. 305, n. 308, 2008.
Rights: fechado
Identifier DOI: 10.1016/j.ssc.2008.05.031
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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