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В. М. Ищук, Н. А. Спиридонов, Е. А. Вовк, Т. Г. Дейнека, З. П. Сергиенко
«Роль фазовых превращений и наноструктур при получении керамики на основе магнониобата свинца с экстравысокими пьезоэлектрическими параметрами »
457–466 (2012)

PACS numbers: 77.22.-d, 77.65.-j, 77.80.-e, 77.84.Dy, 81.05.Je, 81.07.Bc, 81.40.Tv

Piezoceramics of the lead–magnesium niobate–lead titanate (PMN–PT) solid solution with the composition of about 70/30 (from the morphotropic region of the phase diagram) without pyrochlore phase and with the piezoelectric modulus d33???1650 pC/N is obtained by traditional ceramic technology. Peculiarities of the phase transition ‘pyrochlore–perovskite’ in this system are taken into account, when the synthesis of solid solution is performed. Two-level composite intracrystalline structure of ceramics with scales of 20–30 nm and 4–10 nm provides high piezoelectric parameters of ceramic elements. This two-level structure is created during phase transformations and can be controlled by external actions. The results of the investigation of the dependence of ceramic properties on the ratio of solid-solution components (for the morphotropic region) are presented.