Mechanoelectric Effect in Solid Electrolytes

Mechanical stresses in lead zirconate titanate thin films formed on substrates differing in temperature coefficients of linear expansion

“…Subsequently, A. M. Kosevich extended the effect to directed diffusion of vacancies (Kosevich 1975). As applied to thin oxide ferroelectrics, we can talk about the diffusion of charged oxygen vacancies (Barbashov, Komysa 2005;Pronin et al 2017).…”

An influence of mechanical stresses on the magnitude of the internal field in lead zirconate titanate thin films

“…Based on the fact that self-polarization in the first approximation is proportional to the value of the internal field E int [4], we can conclude that long-term aging led both to increase in the internal field and self-polarization, and to increase in the stability of the macroscopic polar state. We believe that the increase in E int is due to the displacement of charged oxygen vacancies [15] through the film thickness, caused by the action of bending mechanical stresses (Gorsky effect) [16][17][18][19]. The Gorsky effect (also called the upward diffusion effect) is often observed in metal alloys subjected to bending mechanical stresses.…”

“…2) [17]. Subsequently, the effect was used to estimate the diffusion of charged oxygen vacancies in complex oxide dielectrics [18].…”