Scientific Papers

G.A. Mesyats, D.I. Proskurovsky. “Pulsed Electrical Discharge in Vacuum,” Springer, Berlin-Heidelberg, (1989).

Foreign Collaborators Prof. Lynn L. Hatfield, Texas Tech. University, USA

№-0136 Electrostrictive Materials for Electromechanical Transducers

Full Title:	Electrostrictive Materials for Electromechanical Transducers and Actuators
Technology Field(s):	MAT-CER: Materials / Ceramics PHY-SSP: Physics / Solid State Physics INF-ELE: Information and Communications / Microelectronics and Optoelectronics

Contributors

Elena P Smirnova

A.F.Ioffe Physico-Technical Institute (Ioffe Inst) 26, Polytechnicheskaya str., St Petersburg, 194021, Russia Phone: 7+812+5159126; 7+812+2473973 Fax: 7+812+5156747; 7+812+2475416 smirnova@shuvpop.ioffe.rssi.ru

Present Status of Research

Brief Description of Research

Electrostrictive materials have been developed for transducers, actuators and adaptive mirrors application. Physical background of giant electrostriction of relaxor ferroelectrics, and induced piezoelectricity in the common ferroelectrics, have been studied. Seven electrostrictive compositions (including lead-free and super high temperature compounds) have been developed to substitute widely used PMN-PT and PZT solid solutions. The advantages of compositions variety consists in the possibility of production of special materials with optimum properties for different applications. The most important results are: lead-free compositions, the development of highly effective piezoelectric modulus up to 10^-9 m/V, low electromechanical hysteresis, temporal and temperature stability in the working temperature range. Electrostrictive transducers, actuators and adaptive mirrors of different types - with different static and dynamic properties - have also been produced. The advantages of electromechanical transducers on the basis of electrostrictive ceramics are the high value of electromechanical quality factor, external electric field control of transducer parameters and the absence of aging and creeping. The famous Russian scientists, Prof. V.A.Isupov and Prof. V.V.Lemanov, were involved in the study.

Legal Aspects

Patent applications for the materials, adaptive mirrors and actuators have been approved in Russia.

Special Facilities None.

Scientific Papers

V.A.Isupov and E.P.Smirnova, “Electrostriction in various ferroelectric ceramics with diffuse phase transition,” Ferroelectrics, v.90, pp. 141-145 (1989).

E.P.Smirnova, A.V.Sotnikov, I.I.Kochina and A.E.Glazunov, “Effect of microstructure on electrostrictive properties of ceramics with diffuse phase transition,” Izv. Acad. Nauk SSSR, ser. fiz., v.54, p. 737 (1990).

V.V.Lemanov, N.K.Yushin, E.P.Smirnova, A.V.Sotnikov, E.A.Tarakanov, and A.Yu.Maksimov, “Giant electrostriction of ferroelectrics with diffuse phase transition: physics and application,” Ferroelectrics, v.134, pp. 139-144 (1992).

E.P.Smirnova, O.V.Rubinstein, and V.A.Isupov, ”Dielectric and electrostrictive properties of PMN-based complex perovskites,” Ferroelectrics, v.143, pp. 263-270 (1993).

N.K.Yushin, E.P.Smirnova, E.A.Tarakanov, and R.Sommer, “Ferroelectric lead magnoscandoniobate solid solutions. Acoustic, dielectric and electrostrictional properties,” Fiz. Tverd. Tela, (Phys. Solid State), v.36, pp. 1321-1330 (1994).

N.K.Yushin, E.A.Tarakanov, and E.P.Smirnova, “Acoustical properties of ferroelectric ceramics with diffuse phase transition,” Ferroelectrics, v.158, pp. 423-428 (1994).

V.A.Isupov, N.K.Yushin, E.P.Smirnova, A.V.Sotnikov, E.A.Tarakanov, and A.Yu.Maksimov, “Electrostrictive actuators on base of PMN-PSN solid solution ceramics,” Ferroelectrics, v.160, pp. 239-242 (1994).

G.Martin, E.A.Tarakanov, M.Weihnacht, and N.K.Yushin, “SAW filter resonant frequency adjustment by electrostrictive and piezoelectric actuators,” Ferroelectrics Letters, v.17, pp.21-23 (1994).

I.P.Pronin, B.A.Rotenberg, and E.A.Tarakanov, “Electrostrictive transducer based on barium titanate-zirconate ceramics,” Pisma Zh. Tekh. Fiz. (Technical Phys. Letters), v. 22, pp. 55-57 (1996).