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Type: Artigo de periódico
Title: Optical And Magnetic Properties Of Zn0.9-xco0.1o : Alx Thin Films
Author: Samanta K.
Bhattacharya P.
Duque J.G.S.
Iwamoto W.
Rettori C.
Pagliuso P.G.
Katiyar R.S.
Abstract: The high-Tc 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:Alx (x=0.005 and 0.01) thin films. The saturation magnetization for the 10% Co-doped ZnO (4 emu/cc) at 300 K reduces (∼0.8 emu/cc) due to Al doping. The resistivity drops abruptly, from ∼ 103 Ω - cm for the ZCO film to 0.033 and 0.02 Ω 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. © 2008 Elsevier Ltd. All rights reserved.
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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