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杂多酸固体膜在变温下的介电弛豫特征 被引量：1

Dielectric characteristic of heteropoly acid material H_6[In(H_2O)GaW_(11)O_(39)]·11H_2O in solid film under varying temperatures
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摘要 研究了不同温度下的11-钨镓合铟杂多酸H6[In(H2O)GaW11O39].11H2O在40Hz-110MHz频率范围的介电谱,发现这些谱都是由两个弛豫过程表征的,分别是由于材料内部粒子表面对离子电荷移动和粒子间界面极化产生的。通过在介电理论基础上的介电解析得到了反映弛豫行为的介电参数。分析介电参数,得到随着温度的增加,绝缘性能增加,显现出良好的介电特性的结论。 The dielectric spectra of undecatungstogalloindic acid with solid film under different temperatures are investigated over the broad frequency region 40Hz--110MH, and two dielectric relaxations were found. The origins of the two relaxations are discussed based on the dielectric theories and are assigned to be the counterion movement for the one at low frequency and the interfacial polarization effect for the one at high frequency, respectively, Furthermore, the dielectric analyses on the dielectric spectra for the all samples under different temperatures are performed and the parameters charecteristic of the dielectric behavior are obtained. By analyzing the results, it is concluded that the undecatungstogalloindic acid is a somewhat insulative material and this property becomes more obvious with the increase in temperature.
作者 吴庆银 赵李川
机构地区 浙江大学化学系 浙江大学材料与化工学院
出处 《渤海大学学报（自然科学版）》 CAS 2008年第4期297-302,共6页 Journal of Bohai University:Natural Science Edition
基金 国家自然科学基金资助项目(No:20271045) NSFC-RFBR基金资助项目(No:20511120009)
关键词 11-钨镓合铟酸 介电谱 极化机制 电导率 undecatungstogalloindic acid dielectric spectra polarization mechanism conductivity
分类号 O611 [理学—无机化学]
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参考文献16

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共引文献6

同被引文献50

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渤海大学学报（自然科学版）
2008年 第4期

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