![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The temperature dependence of the electromechanical coupling factor Kt in PLZT and PSZT ceramics with the composition situated near the ferroelectric(F) and antiferroelectric(AF) phase boundary is investigated. The results show that the value of Kt is connected with the F-AF phase boundary. The Kt, in PLZT ceramics drops down with the increase of temperature which makes the measured site depart from the F-AF phase boundary. The Kt in PSZT ceramics increases with the increase of temperature which makes the measured site close to the F-AF phase boundary. It is possible to develop the piezoelectric ceramic materials with good temperature stability by means of the choice of composition with the proper F-AF phase boundary.