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题名: Co-Mn-Ni-O2系材料阻温特性与频率的关系
其他题名: Relationship between Co-Mn-Ni-O2 resistance temperature property and frequency
作者: 康雪雅; 王天雕; Zhang; D; Button; T
关键词: 频率 ; 热敏电阻 ; NTC ; PTC
刊名: 功能材料与器件学报
发表日期: 2008
卷: 14, 期:3, 页:561-565
收录类别: CSCD
摘要: 通过XRD、SEM分析和变温、变频条件下的logρ-t测量,对Co-Mn-Ni-O2系热敏材料的logρ-t特性与频率关系进行了研究.CoMn1.4Ni0.6O4尖晶石型氧化物热敏电阻材料的logρ-t特性在一定频率(0.1~1MHz)和温度范围(-70~1000℃),发生了由正温度系数(PTC)向负温度系数(NTC)的转变,且转变点的温度(-70~-10℃)和频率(0.1~1MHz)与材料电阻率相关.根据电导率σ和载流子浓度n、载流子迁移率μ之间的关系,对导电机理作了初步的解释.
英文摘要: By XRD 、SEM analysis and logrho-t measurement at alter temperature and alter frequency,resistance temperature characteristics of Co-Mn-Ni-O_2 and frequency relationship were researched.In a range of frequencies(0.1~1MHz) and temperature(-70~100℃),the change of resistance-temperature characteristics is observed for spinel CoMn_(1.4)Ni_(0.6)O_4 thermistor.The change of resistance-temperature characteristics is from PTC(positive temperature coefficient)to NTC(negative temperature coefficient).The temperature(-70~-10℃) and frequency(0.1~1MHz)of transform point are related with material resistivity.On the basis of the relationship of conductance sigma、concentration of carrier n and mobility of carries mu,this phenomenon is preliminary explained.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/4035
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: 中国科学院新疆理化技术研究所;Functional Materials Group IRC in Materials Processing;School of Engineering;University of Birminghan;B15 2TT;UK

Recommended Citation:
康雪雅,王天雕,Zhang,等. Co-Mn-Ni-O2系材料阻温特性与频率的关系[J]. 功能材料与器件学报,2008,14(3):561-565.
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