Phase coexistence and transformations in field-cooled ternary piezoelectric single crystals near the morphotropic phase boundary
Abstract
Structural phase transformations in (100)-oriented Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals have been investigated by X-ray diffraction. A cubic (C) → tetragonal (T) → monoclinic-C (MC) transformation sequence was observed in the field-cooled condition. Two phase coexistence regions of C + T and T + MC were found. In addition to an increase in the C → T phase transition temperature and a decrease of the T → MC one, a broadening of the coexistence regions was also found with increasing field. This broadening can be explained by the presence of polar nano regions within the C, T, and MC phase regions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 08, 2014
- Source ID
- 10.1063/1.4903476
Entities
People
- Chengtao Luo
- D. Viehland
- Haosu Luo
- Jiefang Li
- Wenwei Ge
- Yaojin Wang
- Zhiguang Wang
Organizations
- Office of Naval Research
- Shanghai Institute of Ceramics
- Virginia Tech