6533b7d8fe1ef96bd126b682
RESEARCH PRODUCT
Effects of structure ordering, structure defects and external conditions on properties of complex ferroelectric perovskites
Vismants ZaulsEriks BirksM. TyuninaAndris SternbergL. ShebanovsYohachi Yamashitasubject
Phase boundaryHysteresisPiezoelectric coefficientMaterials scienceCondensed matter physicsThin filmCondensed Matter PhysicsPiezoelectricityFerroelectricityElectronic Optical and Magnetic MaterialsPerovskite (structure)Solid solutiondescription
Abstract Structural rearrangements in lead-containing (A‘A’) (B’B“)O3 type perovskite compounds are caused by technological treatment, high-energy radiation and ambient conditions. Variation of structure ordering along with modification (substituted or defected solid solutions) may provide promising compositions for applications, e.g., cascade microcryogenic devices (PST solid solutions); efficient piezoelectric materials – here the new (1 – x)Pb(Lu1/2Nb1/2)O3 – xPbTiO3 system in the morphotropic region. The maximum values of the electromechanical coupling coefficients kp = 0·663, kt = 0·481, k 31 = 0·355 were attained in compositions PLuNT 59/41 (Tm = 353°C) near the morphotropic phase boundary. In P(L)ZT and PLT thin films asymmetry of piezoelectric coefficient d 33 hysteresis diminished values of d 33 and their frequency dependence were attributed to residual stress at the film-substrate/electrode interfaces and unrelaxed strain characteristic in highly oriented thin films. Neutron irradiation by fluen...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-09-01 | Ferroelectrics |