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Title: X-ray diffraction study of BaTiO{sub 3} single crystals before and after fast-neutron irradiation

The neutron irradiation of ferroelectrics is efficiently used to form structural states that cannot be obtained by conventional technologies. To date, the effect of neutron irradiation on the structure and properties of BaTiO{sub 3} has been studied for only ceramic materials. We have considered the influence of fast-neutron irradiation (F = 1 × 10{sup 17} cm{sup −2}) on the structure and properties of BaTiO{sub 3} single crystals for the first time. The structural changes occurring in irradiated BaTiO{sub 3} and their correlation with the behavior of dielectric and nonlinear optical characteristics are analyzed with the aid of a specially developed method for taking into account the experimental correction to diffuse scattering. Neutron irradiation to the aforementioned dose retains the polar structure of the material and only slightly changes atomic displacements. The radiationinduced structural changes occur according to the high-temperature type to form a structure similar to the cubic modification of unirradiated BaTiO{sub 3} crystal.
Authors:
; ; ; ; ; ; ; ;  [1]
  1. Karpov Institute of Physical Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22472157
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 60; Journal Issue: 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMIC DISPLACEMENTS; BARIUM COMPOUNDS; CERAMICS; CORRECTIONS; CORRELATIONS; CRYSTAL STRUCTURE; DIFFUSE SCATTERING; FAST NEUTRONS; FERROELECTRIC MATERIALS; IRRADIATION; MONOCRYSTALS; NONLINEAR PROBLEMS; TEMPERATURE DEPENDENCE; TITANATES; X-RAY DIFFRACTION