Paraelectric Ba(Zn1/3Nb2/3)O3 (BZN) is realized as an implicit component in Pb(Zn1/3Nb2/3)O3- PbTiO3-BaTiO3 (PZN-PT-BT), which decreases phase transition temperature and weakens dielectric properties. The dielectric behaviors under high electrical field have been investigated. In the broad temperature range of the diffuse phase transition, PZN-PT-BT ceramics show highly induced polarization. An unusual linear relation of the polarization with electrical field has been observed near the central portion of the hysteresis loops of some samples, which are both temperature and composition dependent. The observed ferroelectric properties may be understood using a model of PZN-based matrix containing ferroelectric PT and paraelectric BZN nano-phase regions.
|Number of pages||6|
|Journal||Key Engineering Materials|
|State||Published - 2 Dec 2002|
|Event||Asian Ceramic Science for Electronics II Proceedings of the 2nd Asian Meeting of Electroceramics - Kawasaki, Japan|
Duration: 1 Oct 2001 → 1 Oct 2001