Abstract
In this work, the tin oxide thin films alloyed with Cr up to 50 at.% were prepared via a spray pyrolysis method on the glass substrates, and their structural, magneto-optical and magneto-transport properties were studied. The results show that all the films are polycrystalline grown in a tetragonal rutile structure. A critical Cr concentration of about 15% was found concerning the lattice volume variations in SnO2:Cr films, as well as their magnetoresistance and magneto-optical properties suggesting a correlation between the structural and magnetic behaviors and indicating to two different mechanisms for Cr addition. For low Cr concentrations (less than 15%), the substitutional doping is the involving mechanism, while for more Cr concentrations, the interstitial one is predominant in the involved films.
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