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The complex impedance spectra Z*(omega) were studied for as-grown and annealed in air Na0.5Bi0.5TiO3 single crystals. Experimental data showed that annealing significantly increased impedance and led to appearance of low frequency Z* relaxation. The detected relaxation processes were associated with charge transfer within the regions with initial and reduced after annealing concentration of oxygen vacancies.

Impedance Spectra of As-Grown and Heat Treated Na0.5Bi0.5TiO3 Crystals

Impedance Spectra of As-Grown and Heat Treated Na_0.5Bi_0.5TiO₃ Crystals