The Influence of Ti Doping at the Mn Site on Magnetoresistance and Thermopower Properties of Nd0.5Ca0.5MnO3
Anand A.1, Manjuladevi M.1, Veena R. K.1, Veena V.S.1, Sagar S.1
1Department of Physics, Govt College for Women, Vazhuthacaud, Research Centre, University of Kerala, Thiruvananthapuram, Kerala, India
Email: sagargcw@gmail.com
Nd-Ca-based manganite Nd0.5Ca0.5MnO3 and 10% Ti-doped manganite Nd0.5Ca0.5Ti0.1Mn0.9O3 denoted by N and N0.1, respectively, were prepared using solid-state reaction method. Resistivity gets increased for the Ti-doped sample. The parent compound N has remarkably high magnetoresistance. The highest value of Seebeck coefficient for N is -97 μVK-1 at 143 K and for N0.1 is -207 μVK-1 at 203 K. Variable range hopping mechanism successfully explains the high temperature resistivity and thermopower data. Keywords: magnetoresistance, thermoelectric power, rare-earth based manganites, manganites.
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