“…Despite their outstanding PE characteristics, these materials have a number of drawbacks, such as a low Curie temperature, considerable mechanoelectric hysteresis, creep (time delay and saturation between mechanical deformation and electric signal), nonlinear behavior, strong dependence of the properties on the temperature, as well as large dielectric losses. One possible approach to improve these parameters is to use lead-free PE single crystals such as lithium a) Correspondence should be addressed to a.turutin@misis.ru niobate with high voltage piezoelectric coefficients (g), low permittivity and very low mechanical and dielectric losses [16][17][18][19][20][21]. Furthermore, asymmetric bi-layered systems with bimorph PEs, containing two oppositely poled layers along the thickness direction, are able to generate large voltages under a low-frequency bending deformation and partially cancel both extrinsic vibrational and thermal noises [8,22].…”