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

Journal Article · Tue Sep 15 00:00:00 EDT 2015 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774515050168· OSTI ID:22472157

Ivanov, S. A.; Stefanovich, S. Yu.; Mosunov, A. V.; Boyko, V. M.; Ermakov, V. S.; Korulin, A. V.; Kalyukanov, A. I.; Isakova, N. N. ^[1]

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1. Karpov Institute of Physical Chemistry (Russian Federation)

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.

• OSTI ID: 22472157
• Journal Information: Crystallography Reports, Vol. 60, Issue 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

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