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Title of Journal: J Mater Sci Mater Electron

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Abbravation: Journal of Materials Science: Materials in Electronics

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Springer US

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DOI

10.1002/ardp.200590014

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1573-482X

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Room temperature magnetooptics of nanostructured

Authors: M Ebrahimizadeh Abrishami S M Hosseini
Publish Date: 2012/08/03
Volume: 24, Issue: 1, Pages: 64-69
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Abstract

Undoped ZnO and ZnOMn thin films with different amounts of Mn concentration 5 10 and 15 mol were grown on glass substrates by spray pyrolysis technique Xray diffraction patterns showed that the undoped ZnO thin film exhibited wurtzite structure preferably oriented in caxis direction and the doped samples were polycrystalline The surface morphology and topography of the films were investigated by SEM and STM micrographs Magnetooptical characterizations of the samples were carried out by using Kerr and Faraday effects spectroscopy Kerr effect studies showed that all Mn doped thin films exhibited the room temperature ferromagnetism The magnetic ordering observed in the film with 5 mol Mn concentration was stronger comparing to the other doped samples The carrier densities of the samples were calculated by using a method based on the Faraday rotation A clear relation between spd coupling and strength of magnetic ordering with carrier density was observed

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