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Possibility of using a PMN-PT single crystal as a neutron optical device

机译：使用PMN-PT单晶作为中子光学装置的可能性

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摘要

Variations of the Bragg diffraction angle induced by electric fields on piezoelectric single crystal were investigated with the aim of exploiting such crystals for novel neutron devices. A (1-x)(Pb(Mg1/3Nb2/3)O-3)-x(PbTiO3) (PMN-PT) single crystal With strong piezoelectric characteristics was used in the experiment. The sample was poled along < 001 > direction before the experiment. In the course of diffraction measurements, a 0.3 degrees change was observed in the diffraction angle at the maximum induced by the electric field. The diffraction angle variation shows time-dependent behavior, which can be well described using a single exponential decay limited to a saturated value. This effect is considered a result of a change of the domain structure brought about through long-term application of an electric field for several hours. The obtained preliminary results confirmed the possibility of using a ferroelectric crystal as a neutron optical device. (c) 2006 Elsevier B.V. All rights reserved.
机译：为了将这种晶体用于新型中子装置，研究了压电单晶上电场引起的布拉格衍射角的变化。实验中使用了具有强压电特性的（1-x）（Pb（Mg1 / 3Nb2 / 3）O-3）-x（PbTiO3）（PMN-PT）单晶。实验前将样品沿<001>方向极化。在衍射测量的过程中，在由电场引起的最大衍射角处观察到0.3度变化。衍射角变化显示出随时间变化的行为，可以使用限制为饱和值的单个指数衰减很好地描述它。该效应被认为是通过长期施加电场数小时而引起的域结构变化的结果。得到的初步结果证实了使用铁电晶体作为中子光学装置的可能性。 （c）2006 Elsevier B.V.保留所有权利。

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