Premium
Characterization of the High‐Temperature Ferroelectric (100− x − y ) BiScO 3 –( x ) Bi ( Zr 0.5 Zn 0.5 ) O 3 –( y ) PbTiO 3 Perovskite Ternary Solid Solution
Author(s) -
Kowalski Ben A.,
Sehirlioglu Alp,
Dynys Fred W.,
Sayir Ali
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12648
Subject(s) - ternary operation , materials science , curie temperature , phase boundary , ferroelectricity , dielectric , electromechanical coupling coefficient , analytical chemistry (journal) , piezoelectricity , mineralogy , piezoelectric coefficient , solid solution , dielectric loss , phase (matter) , composite material , condensed matter physics , metallurgy , chemistry , ferromagnetism , optoelectronics , physics , organic chemistry , computer science , programming language , chromatography
Ternary compositions based on Bi (B′B″) O 3 – PbTiO 3 ‐type compounds have been investigated for high‐temperature piezoelectric applications. Compositions in the ternary were chosen to be near the binary morphotropic phase boundary ( MPB ) composition of BiScO 3 – PbTiO 3 ( BS – PT ). Ternary compositions in (100− x − y ) BiScO 3 –( x ) Bi ( Zr 0.5 Zn 0.5 ) O 3 –( y ) PbTiO 3 [(100− x − y ) BS – x BZZ – y PT ] have been investigated with x ≤ 7.5. For compositions with x > 10, the Curie temperature ( T C ) decreased below 400°C. Dielectric, piezoelectric, and electromechanical properties were characterized as a function of temperature, frequency, and electric field. Small additions of BZZ were shown to increase the electromechanical properties with only a small loss in T C . The electromechanical properties were temperature stable up to the depoling temperature. The most promising composition exhibited a T C of 430°C, piezoelectric coefficient ( d 33 ) of 520 pC/N, and a planar coupling factor ( k p ) of 0.45 that remained unchanged up to depoling temperature at 385°C.