Production of negative temperature coefficient thermistors from copper-doped zinc oxide via combustion reaction.

Autor:	de Lima, Wictor Magnus Patrício Araújo, de Sousa Moura, Thaís Liane, de Carvalho Filho, Luiz Henrique, Raimundo, Rafael A., de Oliveira, Danniel Ferreira, Torquato, Ramon Alves
Předmět:	THERMISTORS DOPING agents (Chemistry) COMBUSTION SELF-propagating high-temperature synthesis TEMPERATURE
Zdroj:	MRS Communications; Feb2023, Vol. 13 Issue 1, p75-81, 7p
Abstrakt:	In this work, the effect on microstructure, morphology and thermoresistive property of Cu+2 doping in the ZnO was analyzed. The synthesis method used was the combustion reaction. The results show that, the doped ZnO generates a thermistor (NTC), without second phase formation. There is a shift from diffraction peaks to lower angles up to 2% Cu+2 concentration. Increasing the concentration dopant increases the sensitivity of the thermistor (0.012 to 0.167) and the initial resistivity (71KΩm to 0.59MΩm at 160ºC). In the morphological analysis, occurred increase in density (2.56 g/cm3 to 4.04 g/cm3). [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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