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Ferroelectric phase transitions in KNO3 embedded into porous glasses

机译:嵌入多孔玻璃中的KNO3中的铁电相变

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摘要

This paper presents the results of dielectric and dilatometric measurements of porous glasses filled with KNO3 from water solution and from the melt. It was shown that ferroelectric phase transition is observed during the cooling process only in KNO3 nanocrystals introduced into the porous matrix. The phase diagram of transition temperatures versus average values of pore dimensions was obtained. The phenomenological model describing the phase transition and size effects in KNO3 crystals is proposed. (c) 2007 Elsevier B.V. All rights reserved.
机译:本文介绍了从水溶液和熔体中充满KNO3的多孔玻璃的介电和膨胀测量结果。结果表明,在冷却过程中仅在引入多孔基体的KNO3纳米晶体中观察到铁电相变。获得了相变温度与孔尺寸平均值的相图。提出了描述KNO3晶体中相变和尺寸效应的现象学模型。 (c)2007 Elsevier B.V.保留所有权利。

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