Dark relaxation of holographic gratings in azobenzene and chalcogenide films

Abstract

In recent years, a family of high performance piezoelectric materials for general and specialized applications was developed: PZT-43, PZT-46, PZT-47, PZT-48, PZT-50, all of them exhibit high dielectric, piezoelectric, and elastic characteristics. A specialized piezoceramic material NPZT-2 having d33 = 800 pC/N , ε33 Т /ε0 = 4600, ТС= 140 °С and exhibiting low sintering temperature was developed.Unique piezoceramic material TCVC-2 with d33 = 340 pC/N, d15 = 520 pC/N was developed, its working temperature equals 320°С. JSC Research Institute "Elpa" is the only Russian research and production company, owning piezoelectric film casting technology and having the full manufacturing cycle for multilayer piezoceramic actuators and sensors.