Piezoelectric and ferroelectric materials are useful as the active element in non-destructive monitoring devices for high-radiation areas. Here, crystallographic structural refinement (i.e., the Rietveld method) is used to quantify the type and extent of structural changes in PbZr0.5Ti0.5O3 after exposure to a 1 MeV equivalent neutron fluence of 1.7x1015 neutrons/cm2. The results showa measurable decrease in the occupancy of Pb and O due to irradiation, with O vacancies in the tetragonal phase being created preferentially on one of the two O sites. The results demonstrate a method by which the effects of radiation on crystallographic structure may be investigated.
A. Henriques et al., "Crystallographic Changes in Lead Zirconate Titanate Due to Neutron Irradiation," AIP Advances, vol. 4, no. 11, American Institute of Physics (AIP), Nov 2014.
The definitive version is available at https://doi.org/10.1063/1.4902179
Mining and Nuclear Engineering
Keywords and Phrases
Ferroelectric materials; Irradiation; Lead; Radiation effects; Rietveld refinement; Semiconducting lead compounds; Active elements; Crystallographic structure; Lead zirconate titanate; Neutron fluences; Non-destructive monitoring; O vacancies; Structural refinement; Tetragonal phase; Neutron irradiation
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01 Nov 2014