The temperature dependences of the permittivity and pyroelectric coefficient of BaTi1 − x Sn x O3 piezoelectric ceramics with a homogeneous composition and a tin concentration gradient have been studied. The thermal diffusion coefficient has been measured. The polarization profiles of the materials under study have been calculated by the thermal square wave method at a single frequency.
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Malyshkina et al. (2010) studied this question.
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