Webber, Kyle G. ; Zhang, Y. ; Jo, Wook ; Daniels, John E. ; Rödel, Jürgen (2010)
High temperature stress-induced “double loop-like” phase transitions in Bi-based perovskites.
In: Journal of Applied Physics, 108 (1)
doi: 10.1063/1.3428373
Article, Bibliographie
Abstract
Polycrystalline 0.94(Bi1/2Na1/2)TiO3–0.06BaTiO3 samples were tested under uniaxial mechanical compression at various temperatures in the vicinity of the polar tetragonal to nonpolar tetragonal phase boundary. They are shown to display double loop-like stress-strain behavior, marked by a closed ferroelastic hysteresis loop. Thus, it forms a mechanical analog to the polarization-electric field hysteresis behavior of barium titanate above the Curie temperature. As temperature is increased there is an apparent loss of macroscopically observable ferroelasticity, despite the persistence of tetragonality. Macroscopic experimental results are discussed in conjunction with temperature-dependent and stress-dependent high-energy x-ray diffraction data. This reveals a phase transition below the Curie temperature, marked by a discontinuous change in lattice parameters and octahedral tilting during compressive mechanical loading.
| Item Type: | Article |
|---|---|
| Erschienen: | 2010 |
| Creators: | Webber, Kyle G. ; Zhang, Y. ; Jo, Wook ; Daniels, John E. ; Rödel, Jürgen |
| Type of entry: | Bibliographie |
| Title: | High temperature stress-induced “double loop-like” phase transitions in Bi-based perovskites |
| Language: | English |
| Date: | July 2010 |
| Journal or Publication Title: | Journal of Applied Physics |
| Volume of the journal: | 108 |
| Issue Number: | 1 |
| DOI: | 10.1063/1.3428373 |
| Abstract: | Polycrystalline 0.94(Bi1/2Na1/2)TiO3–0.06BaTiO3 samples were tested under uniaxial mechanical compression at various temperatures in the vicinity of the polar tetragonal to nonpolar tetragonal phase boundary. They are shown to display double loop-like stress-strain behavior, marked by a closed ferroelastic hysteresis loop. Thus, it forms a mechanical analog to the polarization-electric field hysteresis behavior of barium titanate above the Curie temperature. As temperature is increased there is an apparent loss of macroscopically observable ferroelasticity, despite the persistence of tetragonality. Macroscopic experimental results are discussed in conjunction with temperature-dependent and stress-dependent high-energy x-ray diffraction data. This reveals a phase transition below the Curie temperature, marked by a discontinuous change in lattice parameters and octahedral tilting during compressive mechanical loading. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials |
| Date Deposited: | 17 Jun 2011 13:59 |
| Last Modified: | 28 Feb 2014 09:08 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum