Preparation and Electrical Properties of Mn-Co-Ni-O Thin-film for NTC Thermistors Application
Mn-Co-Ni-O (Mn:Co:Ni=1.74:0.72:0.54,MCN) thin films with single cubic spinel structure were prepared on Si substrates by metal organic solution deposition (MOSD) method at different annealing temperatures.The effects of annealing temperature on the phase component,crystalline microstructure,surface morphology and electrical properties of the MCN thin films were studied.According to the results of x-ray diffraction pattern,the MCN thin film annealed at 650℃ had spinel structure.Observation with field emission scanning electron microscope (FE-SEM) on the MCN thin films showed that the grain size increased with increasing annealing temperature.The resistance measured at room-temperature was 18.143,12.457,2.435 and 3.141MΩ for the MCN thin films annealed at 650,700,750 and 800℃,respectively.The values of thermistor constant (B30/85) and activation energy (Ea) were in the range of 3260-4840K and 0.28-0.42eV,respectively.
Co-Mn-Ni-O Electrical property Thin-film NTC thermistor
Xueying Chen Lei Wang Jinbao Xu Liang Bian Bo Gao
Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institut Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institut
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
599-604
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）