Back to Search
Start Over
Propensity for spontaneous relaxor-ferroelectric transition in quenched (Na1/2Bi1/2)TiO3-BaTiO3 compositions
- Source :
- Applied Physics Letters. 113:252902
- Publication Year :
- 2018
- Publisher :
- AIP Publishing, 2018.
-
Abstract
- Recently, quenching lead-free non-ergodic relaxor Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) materials has been reported to increase the thermal depolarization temperature and enhance the lattice distortion. Driven by the conjecture that enhanced lattice distortion is typically associated with the onset of ferroelectric order, two non-ergodic relaxor NBT-BT compositions at the morphotropic phase boundary were investigated. As evident from the temperature-dependent permittivity, both compositions exhibit a stabilization of ferroelectric order upon quenching. An increase in the depolarization temperature by 40–60 °C is observed. Moreover, the composition with higher tetragonality undergoes a spontaneous relaxor-ferroelectric transition upon quenching. Annealing in oxygen atmosphere is shown to revert back the quenching-induced ferroelectric order to the relaxor state.Recently, quenching lead-free non-ergodic relaxor Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) materials has been reported to increase the thermal depolarization temperature and enhance the lattice distortion. Driven by the conjecture that enhanced lattice distortion is typically associated with the onset of ferroelectric order, two non-ergodic relaxor NBT-BT compositions at the morphotropic phase boundary were investigated. As evident from the temperature-dependent permittivity, both compositions exhibit a stabilization of ferroelectric order upon quenching. An increase in the depolarization temperature by 40–60 °C is observed. Moreover, the composition with higher tetragonality undergoes a spontaneous relaxor-ferroelectric transition upon quenching. Annealing in oxygen atmosphere is shown to revert back the quenching-induced ferroelectric order to the relaxor state.
- Subjects :
- 010302 applied physics
Permittivity
Quenching
Phase boundary
Materials science
Physics and Astronomy (miscellaneous)
Condensed matter physics
Annealing (metallurgy)
High Energy Physics::Lattice
Depolarization
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Ferroelectricity
Condensed Matter::Materials Science
0103 physical sciences
Thermal
0210 nano-technology
Relaxor ferroelectric
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 113
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........392f9afb55cb0921b3bb86596bc6cd53