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Manganese vanadium oxide thermistor materials both in bulk and thin film form have been prepared and characterized. The bulk materials synthesized by ceramic tape casting and solid state sintering are crystalline in nature while thin films are amorphous even after post deposition annealing at high temperature. The electrical properties' study clearly shows that these materials follow a typical characteristic...
Densification process of Mn-Cr-O negative temperature coefficient (NTC) ceramic compositions in presence of Bi2O3 as a sintering aid and also as a dopant was studied. Bi2O3 (3.8mole %) decreased the sintering temperature of the phase pure MnxCr3−xO4 compositions and obtained more than 95% of theoretical density. Electrical characteristics of the compositions were evaluated and it is found that Bi2...
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