Effect of V2O5 Additive on the Microstructure and Electrical Properties of Mn-Co-NiO NTC Thermistor

Wei Min Wang; Xiangchun Liu; Ming Zhao; Chang Sheng Tian

doi:10.4028/www.scientific.net/KEM.336-338.743

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 336-338Effect of V2O5 Additive on the Microstructure and...

Effect of V₂O₅ Additive on the Microstructure and Electrical Properties of Mn-Co-NiO NTC Thermistor

Abstract:

The aim of this paper is to investigate the effects of V2O5 additive on the electrical properties of NTC thermistors based on Ni0.5Co0.5Mn2O4.The XRD analyses indicate that single spinel phase can form, and V2+ions are in the octahedral interspace. The cell can be enlarged due to the V2O5 additive. The resistivities (ρ) and the material constant (B) increase obviously, the reasons of which are mainly attributed to the outer electron configuration of V2+ and cell enlargement.