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  ntc effect
    The grain resistance exhibited NTC effect,but the grain boundary resistance showed PTC effect. The grain boundary resistance was larger than the grain resistance,so the PTC effect originated from the grain boundary.
    晶粒电阻随着温度的变化,呈现NTC效应,而晶界电阻随着温度的变化,呈现PTC效应,而且晶界电阻远远大于晶粒电阻,说明Gd2O3掺杂BaTiO3陶瓷的PTC效应是一种晶界效应;
短句来源
    The grain resistance of BaTiO 3 ceramic doped with La 3+ exhibits NTC effect,but the grain boundary resistance shows PTC effect,and the grain boundary resistance is larger than the grain resistance,so the PTC effect originates from the grain boundary.
    La掺杂BaTiO3陶瓷的晶粒电阻随温度的变化,呈现出明显的NTC效应,而晶界电阻则呈现PTC效应。
短句来源
  ntc effect
    The grain resistance exhibited NTC effect,but the grain boundary resistance showed PTC effect. The grain boundary resistance was larger than the grain resistance,so the PTC effect originated from the grain boundary.
    晶粒电阻随着温度的变化,呈现NTC效应,而晶界电阻随着温度的变化,呈现PTC效应,而且晶界电阻远远大于晶粒电阻,说明Gd2O3掺杂BaTiO3陶瓷的PTC效应是一种晶界效应;
短句来源
    The grain resistance of BaTiO 3 ceramic doped with La 3+ exhibits NTC effect,but the grain boundary resistance shows PTC effect,and the grain boundary resistance is larger than the grain resistance,so the PTC effect originates from the grain boundary.
    La掺杂BaTiO3陶瓷的晶粒电阻随温度的变化,呈现出明显的NTC效应,而晶界电阻则呈现PTC效应。
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  “ntc效应”译为未确定词的双语例句
    V-I Nonlinear and Negative Temperature Coefficient of ZnO/Co_2O_3 Base Unit Material of Sensitive Resistance
    ZnO/Co_2O_3敏感电阻单元材料V-I非线性及NTC效应
短句来源
    The BaTiO3 showed the effect of negative temperature coefficient of resistivity after it was penetrated by Pr and Mn together,and the resistivity could decrease from 104 mto 102 m.
    纯BaTiO3陶瓷经Pr、Mn两种元素共同扩渗后,在25℃~300℃范围内,电阻率可由104m数量级降至102m数量级,出现了NTC效应
短句来源
    The grain resistance of BaTiO3 ceramics doped with Sm2O3 exhibited NTC, but the grain boundary resistance showed PTC, and the grain boundary resistance was larger than the grain resistance, so the PTC effect originated from the grain boundary.
    Sm2O3掺杂BaTiO3陶瓷的晶粒电阻随着温度的变化,呈现NTC效应,而晶界电阻随着温度的变化,呈现PTC效应,且晶界电阻远远大于晶粒电阻,说明该材料的PTC效应是由晶界效应引起的.
短句来源
    The positive temperature coefficient effect ofthis material originates from the penetration of oxygen in grain boundaries,mealwhile the negative temperaturecoefficient effect is due to the high formation energy of the carriers and the high activation energy of their diffu sion.
    指出该材料的PTC效应仍起源于受主态在晶界形成的势垒,其强烈的NTC效应则是由于载流子的生成能和迁移激活能较大所引起。
短句来源
    ThesampleobservedbymeansofESRduringchangingtemperatureshowedthat Co2 +andCo3 +existedexchanging ,whichmeanselectronstrappedbyCo2 +ionexistedtheexchangingprocessoftrappedandreleased , whichisthebasisofZnO/Co2 O3 baseunitmaterialofsensitivewithbothV -InonlinearandNTCeffectproducedunderelectricityand heatfields .
    变温过程ESR动态观察显示 ,Co2 +与Co3 +可逆变换 ,说明被Co2 +离子束缚的电子存在禁锢与脱离的可逆过程。 这是ZnO/Co2 O3 敏感电阻单元材料在电场、热场下产生V -I非线性及NTC效应的基础。
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The preparation and the electrical conduction mechanism of(Sr,Pb)TiO_3 material with V-type resistivity-temperature characteristics are investigated in this paper.The positive temperature coefficient effect ofthis material originates from the penetration of oxygen in grain boundaries,mealwhile the negative temperaturecoefficient effect is due to the high formation energy of the carriers and the high activation energy of their diffu sion.

本文研究了(Sr,Pb)TiO_3系V型PTC材料的制备及导电机理。指出该材料的PTC效应仍起源于受主态在晶界形成的势垒,其强烈的NTC效应则是由于载流子的生成能和迁移激活能较大所引起。

ZnO/Co2 O3 baseunitmaterialofsensitiveresistancehasbothV -Inonlinearcharacterandnegativetemperaturecoefficient (NTC)effective.Theformationoftwopropertiescloselyrelatedtotheheattreatmenttemperatureatnear 90 0℃duringsintering .Differ entthermalanalysis (DTA)showsthatthereisaphasetransitionabsorbingpeakofCo2 O3 rawmaterialat 90 4℃ .Theheattreatmentat thattemperatureduringsinteringcontributedtotheenhancementofV -InonlinearandNTC .Electronspinresonancespectroscopy (ESR) confirmedthatCoionvalencechangesfromCo3...

ZnO/Co2 O3 baseunitmaterialofsensitiveresistancehasbothV -Inonlinearcharacterandnegativetemperaturecoefficient (NTC)effective.Theformationoftwopropertiescloselyrelatedtotheheattreatmenttemperatureatnear 90 0℃duringsintering .Differ entthermalanalysis (DTA)showsthatthereisaphasetransitionabsorbingpeakofCo2 O3 rawmaterialat 90 4℃ .Theheattreatmentat thattemperatureduringsinteringcontributedtotheenhancementofV -InonlinearandNTC .Electronspinresonancespectroscopy (ESR) confirmedthatCoionvalencechangesfromCo3 +beforesinteringtoCo2 +aftersintering .ZnO/Co2 O3 samplewithgoodV -Inonlinearpa rametercorrelatedtothestrongestCo2 +ionESRsignal.ThesampleobservedbymeansofESRduringchangingtemperatureshowedthat Co2 +andCo3 +existedexchanging ,whichmeanselectronstrappedbyCo2 +ionexistedtheexchangingprocessoftrappedandreleased , whichisthebasisofZnO/Co2 O3 baseunitmaterialofsensitivewithbothV -InonlinearandNTCeffectproducedunderelectricityand heatfields .

制备的ZnO/Co2 O3 敏感电阻单元材料同时具有伏安(V -I)非线性特性及负温电阻 (NTC)效应。两种效应的形成与烧结过程 90 0℃热处理温度密切相关。差热分析 (DTA)曲线表明 :Co2 O3 在 90 4℃有一相变吸收峰。在该温度点保温热处理的ZnO/Co2 O3 敏感电阻单元材料获得相对大的伏安非线性和NTC效应。电子自旋共振谱 (ESR)证明 ,Co离子由烧结热处理前的Co3 +价变成热处理后的Co2 +价 ,其中最大敏感电阻和伏安非线性参数样品与最强Co2 +离子ESR信号对应。变温过程ESR动态观察显示 ,Co2 +与Co3 +可逆变换 ,说明被Co2 +离子束缚的电子存在禁锢与脱离的可逆过程。这是ZnO/Co2 O3 敏感电阻单元材料在电场、热场下产生V -I非线性及NTC效应的基础。

BaTiO3 ceramics doped with Gd2O3(the additive content was respectively 0001,0002,0003,0005,0007 mol/mol)were prepared by solgel method.Effects of Gd2O3 doping on electric characteristics of BaTiO3 ceramics were studied.The results showed that the resistivity decreased obviously with the doping of Gd2O3,and when Gd2O3 content was 0002 mol/mol,the resistivity was the smallest,namely 127×105 Ω·m.The grain resistance exhibited NTC effect,but the grain boundary resistance showed PTC effect.The...

BaTiO3 ceramics doped with Gd2O3(the additive content was respectively 0001,0002,0003,0005,0007 mol/mol)were prepared by solgel method.Effects of Gd2O3 doping on electric characteristics of BaTiO3 ceramics were studied.The results showed that the resistivity decreased obviously with the doping of Gd2O3,and when Gd2O3 content was 0002 mol/mol,the resistivity was the smallest,namely 127×105 Ω·m.The grain resistance exhibited NTC effect,but the grain boundary resistance showed PTC effect.The grain boundary resistance was larger than the grain resistance,so the PTC effect originated from the grain boundary.The dielectric constant (ε) and the dielectric loss (tan δ) of BaTiO3 ceramic doped with Gd2O3 increased at lower frequency and decreased at higher frequency obviously.

采用溶胶-凝胶法制备了掺杂不同量Gd2O3(分别为0 001、0 002、0 003、0 005、0 007mol mol)的BaTiO3陶瓷,并对其电性能进行了研究。结果表明:Gd2O3掺杂使BaTiO3陶瓷的电阻率明显下降,当添加量为0 002mol mol时,电阻率最小,为1 27×105Ω·m;晶粒电阻随着温度的变化,呈现NTC效应,而晶界电阻随着温度的变化,呈现PTC效应,而且晶界电阻远远大于晶粒电阻,说明Gd2O3掺杂BaTiO3陶瓷的PTC效应是一种晶界效应;Gd2O3掺杂使BaTiO3陶瓷的介电常数和介电损耗在低频时明显增大,在高频时又明显降低。

 
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