Studying the Electrophysical and Mechanical Parameters of Piezoceramic Materials for Deformable Cartridge-Type Mirrors. - Toporovsky, V. V.; Samarkin, V. V.; Kudryashov, A. V.; Galaktionov, I. V.; Malykhin, A. Yu.; Panich, A. A. (Bulletin of the Russian Academy of Sciences: Physics, 2023)