Pyrochlore‐Free Ferroelectric 0.64Pb(Ni1/3Nb2/3)O3–0.36PbTiO3 Ceramics Synthesized by the Combustion Method
Abstract
By adopting Nb2O5, HNO3 and coordination agents EDTA as raw materials, pyrochlore‐free 0.64Pb(Ni1/3Nb2/3)O3–0.36PbTiO3(0.64PNN–0.36PT) powders were successfully synthesized via a combustion route. Free of pyrochlore phase was realized by the chelation formation of EDTA‐metal ions which isolate niobium and lead oxides and then prevent the formation of pyrochlore phases, therein generate the desired perovskite phases. Comparing the results with similar samples synthesized by the Columbite method, the new 0.64PNN–0.36PT ceramics here shown much better dielectric and ferroelectric performances: a maximum dielectric constant of 22 856 at 1 kHz and a remnant polarization of 21.6 μC/cm2 at 40 kV/cm.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 16, 2014
- Source ID
- 10.1111/jace.12934
Entities
People
- Jian Tang
- Jianlin Wang
- Min Liu
- Randy J. Knize
- Yalin Lu
- Zhiwei Lei
Organizations
- Air Force Office of Scientific Research
- Defense Threat Reduction Agency
- Hefei National Laboratory for Physical Sciences at the Microscale
- National Natural Science Foundation of China
- Program 973
- United States Air Force Academy
- University of Science and Technology of China