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首页> 外文期刊>Physica status solidi, B. Basic research >Two relaxation processes in the inhomogeneous deuterated ferroelectric Rb-0.96(ND4)(0.04)D(2)ASO(4)
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Two relaxation processes in the inhomogeneous deuterated ferroelectric Rb-0.96(ND4)(0.04)D(2)ASO(4)

机译：非均匀氘铁电Rb-0.96（ND4）（0.04）D（2）ASO（4）中的两个弛豫过程

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摘要

This paper reports the results of the influence of dc electric field on the complex permittivity epsilon* = epsilon' - iepsilon" in the inhomogeneous deuterated ferroelectric Rb1-x(ND4)(x)D2AsO4, where x = 0.04 (DRADA with x = 0.04). In this crystal the coexistence of ferroelectric and short-range ordered (glass) phases takes place at a low temperature below T,. At T, = 155 K the transition to the ferroelectric state is reported. Two relaxation processes were observed in the perpendicular orientation to the ferroelectric c-axis in the temperature range from 3.5 K to 300 K. The influence of a dc electric field on the temperature dependence of the dielectric losses shows clearly two different relaxation processes. At temperatures around 60 K, there is a dispersion related to the embryos of the glass clusters, which coexists with ferroelectric domains. The dispersion around 120 K due to frozen domain wall motion is also observed in the perpendicular direction to the ferroelectric c-axis along hydrogen bonds. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. [References: 23]
机译：本文报告了直流电场对非均匀氘代铁电体Rb1-x（ND4）（x）D2AsO4中复介电常数epsilon * = epsilon'-iepsilon“的影响的结果，其中x = 0.04（x = 0.04的DRADA ）。在此晶体中，铁电相和短程有序（玻璃）相共存，发生在低于T，的低温下。在T = 155 K时，据报道发生了向铁电态的跃迁。直流电场对铁电c轴的垂直取向在3.5 K到300 K的温度范围内。直流电场对介电损耗的温度依赖性的影响显然显示出两个不同的弛豫过程：在60 K左右的温度下，存在一个与玻璃团簇的胚有关的色散与铁电畴共存，在垂直于铁电c轴a的方向上也观察到由​​于冻结畴壁运动而在120 K附近产生的色散长氢键。 （C）2004 WILEY-VCH Verlag GmbH＆Co. KGaA，Weinheim。 [参考：23]

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