Characterization of the High‐Temperature Ferroelectric (100−x−y)BiScO3–(x)Bi(Zr0.5Zn0.5)O3–(y)PbTiO3 Perovskite Ternary Solid Solution. Issue 2 (5th December 2013)

• Record Type: Journal Article
• Authors: Kowalski, Ben A.; Sehirlioglu, Alp; Dynys, Fred W.; Sayir, Ali
• Editors: Davies, P. K.
• Is Part Of: Journal of the American Ceramic Society. Volume 97:Issue 2(2014)
• Page Start: 490
• Page End: 497
• Publication Date: 2013-12-05
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12648
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract : Ternary compositions based on Bi(B′B″)O3 –PbTiO3 ‐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 BiScO3 –PbTiO3 (BS–PT). Ternary compositions in (100− x − y )BiScO3 –( x )Bi(Zr0.5 Zn0.5 )O3 –( y )PbTiO3 [(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.