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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Dielectric universal law of lead silicate glasses doped with neodymium oxide
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Dielectric universal law of lead silicate glasses doped with neodymium oxide

机译：掺氧化钕的硅酸铅玻璃的介电通用定律

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摘要

Dielectric spectroscopy can, nowadays, cover a very broad frequency range by using a tuned combination of different measurement instrumentation. This technique can provide very useful information concerning the electrical conductivity of glasses used frequently as insulators, and on the possibility of new applications in a large frequency range. In this work we present the dielectric response of lead silicate glasses doped with neodymium oxide, in the frequency range 100 mHz-100 kHz, and temperature between 300 K and 600 K. The dielectric behavior follows a power law, epsilon'(omega) = B omega(n-1)+ epsilon(infinity) which is a consequence of the Curie-von Schweidler regime in the time domain. This behavior is frequently applicable to different structural forms, types of chemical bounds and geometric configurations. The values obtained for the exponent n, show that a weak dependence of the permittivity on frequency is observed. The variations with the concentration of the doping oxide are not significant. Nevertheless, the B parameter suffers a variation with concentration, which confirms the cluster formation at a critical concentration. (c) 2007 Elsevier B.V. All rights reserved.
机译：如今，通过使用不同测量仪器的调谐组合，介电谱可以覆盖非常宽的频率范围。该技术可以提供非常有用的信息，有关经常用作绝缘体的玻璃的电导率，以及在大频率范围内进行新应用的可能性。在这项工作中，我们介绍了掺杂氧化钕的硅酸铅玻璃的介电响应，其频率范围为100 mHz-100 kHz，温度为300 K至600K。介电行为遵循幂定律，ε= B omega（n-1）+ epsilon（infinity）是时域居里·冯·史威德（Curie-von Schweidler）政权的结果。此行为通常适用于不同的结构形式，化学界类型和几何构型。从指数n获得的值表明，观察到介电常数对频率的弱依赖性。掺杂氧化物浓度的变化不明显。然而，B参数随浓度而变化，这证实了在临界浓度下的团簇形成。 （c）2007 Elsevier B.V.保留所有权利。

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