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首页> 外文期刊>Physica status solidi, B. Basic research >Effect of cooling on electrical conductivity of TiO2
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Effect of cooling on electrical conductivity of TiO2

机译:冷却对TiO2电导率的影响

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The present work reports the effect of cooling on the electrical conductivity of undoped and Nb doped TiO2 in the temperature range 1279 - 300 K in the gas phase of controlled oxygen activity. It is shown during cooling depends critically on the processing conditions at elevated temperatures before cooling and the related defect disorder. It is shown that processing in reductive conditions results in the imposition of electronic charge compensation leading in consequence to higher values of electrical conductivity at room temperature for both undoped TiO2 and Nb doped TiO2. It is shown that the "dynamic" activation energy of the electrical conductivity during cooling differs from that determined in equilibrium. (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
机译:本工作报告了在受控氧活度的气相中,冷却对温度范围为1279-300 K的未掺杂和Nb掺杂的TiO2电导率的影响。可以看出,在冷却过程中,它严重取决于冷却之前在高温下的加工条件以及相关的缺陷状况。结果表明,在还原条件下进行处理会导致施加电子电荷补偿,从而导致未掺杂的TiO2和Nb掺杂的TiO2在室温下的电导率值更高。结果表明,冷却过程中电导率的“动态”活化能不同于平衡时确定的活化能。 (c)2008年WILEY-VCH Verlag GmbH&Co.KGaA,Weinheim。

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