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首页> 外文期刊>Physica, B. Condensed Matter >Characterization and electrical properties of V2O5-CUO-P2O5 glasses
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Characterization and electrical properties of V2O5-CUO-P2O5 glasses

机译：V2O5-CUO-P2O5玻璃的表征和电性能

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摘要

Characterization and electrical properties of vanadium-copper-phosphate glasses of compositions XV2O5-(40-x)CuO-60P(2)O(5) have been reported. X-ray diffraction (XRD) confirms the amorphous nature of these glasses. It was observed that, the density (d) decreases gradually while the molar volume (V-m) increases with the increase of the vanadium oxide content in such glasses. This may be due to the effect of the polarizing power strength, PPS, which is a measure of ratio of the cation valance to its diameter. The dc conductivity increases while the activation energy decreases with the increase of the V2O5 content. The de conductivity in the present glasses is electronic and depends strongly upon the average distance, R, between the vanadium ions. Analysis of the electrical properties has been made in the light of small polaron hopping model. The parameters obtained from the fits of the experimental data to this model are reasonable and consistent with glass composition. The conduction is attributed to non-adiabatic hopping of small polaron. (C) 2008 Elsevier B.V. All rights reserved.
机译：已经报道了组合物XV2O5-（40-x）CuO-60P（2）O（5）的钒-铜-磷酸盐玻璃的表征和电性能。 X射线衍射（XRD）证实了这些玻璃的无定形性质。观察到，随着这种玻璃中钒氧化物含量的增加，密度（d）逐渐降低，而摩尔体积（V-m）增加。这可能是由于极化强度强度PPS的影响，它是阳离子化合价与其直径之比的量度。随着V2O5含量的增加，直流电导率增加，而活化能降低。本发明玻璃中的导电性是电子的，并且很大程度上取决于钒离子之间的平均距离R。根据小极化子跳跃模型对电性能进行了分析。从实验数据与该模型的拟合中获得的参数是合理的，并且与玻璃成分一致。传导归因于小极化子的非绝热跳跃。 （C）2008 Elsevier B.V.保留所有权利。

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