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The Influence of Ti Doping at the Mn Site on Magnetoresistance and Thermopower Properties of Nd-=SUB=-0.5-=/SUB=-Ca-=SUB=-0.5-=/SUB=-MnO-=SUB=-3-=/SUB=-
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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.
Ioffe Institute Russian Academy of Sciences
Title: The Influence of Ti Doping at the Mn Site on Magnetoresistance and Thermopower Properties of Nd-=SUB=-0.5-=/SUB=-Ca-=SUB=-0.5-=/SUB=-MnO-=SUB=-3-=/SUB=-
Description:
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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