METHOD OF PRODUCING PIEZOCERAMIC MATERIAL BASED ON LEAD ZIRCONATE-TITANATE PHASES Russian patent published in 2024 - IPC C04B35/491 C04B35/626 

FIELD: piezoceramics.

SUBSTANCE: invention relates to synthesis of crystalline powders of lead zirconate-titanate (Pb) phases Pb[Zr_(x),Ti_(1−x)]O₃, including alloying additives, and can be used in making functional ceramic materials, including piezoelectric and dielectric for modern radio electronic equipment. Method of producing piezoceramic material based on lead zirconate-titanate phases, including those containing alloying additives, involves making a mixture by mixing precursors (PbO, ZrO₂, TiO₂, etc.), solid-phase synthesis of ferroelectric phase powders with subsequent pressing and sintering. Into the initial charge containing precursors with impurities in the form of cadmium oxides, and/or nickel, and/or magnesium, and/or cobalt, and/or iron, and/or manganese in an amount of more than 0.2 wt.% of each of the impurities, adding bismuth (III) and titanium (IV) oxides or bismuth (III) oxide in an amount necessary for the formation of phases of the composition Bi(Me_0.5Ti_0.5)O₃, where Me is a double-charged cation of cadmium, or nickel, or magnesium, or cobalt, or BiMeO₃, where Me is a triple-charged cation of iron or manganese.

EFFECT: technical result of the proposed method, which involves the use of base phases of precursors containing more than 0.2 wt.% of individual impurities, is the production of a piezoceramic material, values of electrophysical parameters of which are not inferior to values of electrophysical parameters of the same material obtained using precursors without impurities.

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