Characterization of the High‐Temperature Ferroelectric (100−x−y)BiScO3–(x)Bi(Zr0.5Zn0.5)O3–(y)PbTiO3 Perovskite Ternary Solid Solution
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(Zr0.5Zn0.5)O3–(y)PbTiO3 [(100−x−y)BS–xBZZ–yPT] have been investigated with x ≤ 7.5. For compositions with x > 10, the Curie temperature (TC) 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 TC. The electromechanical properties were temperature stable up to the depoling temperature. The most promising composition exhibited a TC of 430°C, piezoelectric coefficient (d33) of 520 pC/N, and a planar coupling factor (kp) of 0.45 that remained unchanged up to depoling temperature at 385°C.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 05, 2013
- Source ID
- 10.1111/jace.12648
Entities
People
- Ali Sayir
- Alp Sehirlioglu
- Benjamin A. Kowalski
- Fred W. Dynys
Organizations
- Air Force Office of Scientific Research
- Case Western Reserve University
- Glenn Research Center
- National Aeronautics and Space Administration