Jo, Wook and Daniels, John E. and Damjanovic, Dragan and Kleemann, Wolfgang and Rödel, Jürgen (2013):
Two-stage processes of electrically induced-ferroelectric to relaxor transition in 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3.
In: Applied Physics Letters, 102 (19), pp. 192903(1-4), ISSN 00036951,
[Online-Edition: http://dx.doi.org/10.1063/1.4805360],
[Article]
Abstract
The stability of electrically induced long-range ferroelectric order in a relaxor 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3 ceramic material has been investigated by temperature-dependent X-ray diffraction and electrical property measurements. The depolarization and ferroelectric-to-relaxor transition are identified as separate and discrete processes. It is observed that the induced ferroelectric domains first lose their ferroelectric/ferroelastic texture coincident with a peak signal in the thermally induced depolarization current. With further increase in temperature, the detextured ferroelectric domains are dissociated into nanoscale entities. This fragmentation marks the ferroelectric-to-relaxor transition. It is suggested that the ferroelectric-to-relaxor transition has features of a second order phase transition.
| Item Type: | Article |
|---|---|
| Erschienen: | 2013 |
| Creators: | Jo, Wook and Daniels, John E. and Damjanovic, Dragan and Kleemann, Wolfgang and Rödel, Jürgen |
| Title: | Two-stage processes of electrically induced-ferroelectric to relaxor transition in 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3 |
| Language: | English |
| Abstract: | The stability of electrically induced long-range ferroelectric order in a relaxor 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO3 ceramic material has been investigated by temperature-dependent X-ray diffraction and electrical property measurements. The depolarization and ferroelectric-to-relaxor transition are identified as separate and discrete processes. It is observed that the induced ferroelectric domains first lose their ferroelectric/ferroelastic texture coincident with a peak signal in the thermally induced depolarization current. With further increase in temperature, the detextured ferroelectric domains are dissociated into nanoscale entities. This fragmentation marks the ferroelectric-to-relaxor transition. It is suggested that the ferroelectric-to-relaxor transition has features of a second order phase transition. |
| Journal or Publication Title: | Applied Physics Letters |
| Volume: | 102 |
| Number: | 19 |
| Uncontrolled Keywords: | barium compounds, bismuth compounds, dielectric depolarisation, electric domains, ferroelasticity, ferroelectric ceramics, ferroelectric transitions, relaxor ferroelectrics, sodium compounds, texture, X-ray diffraction |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A1: Manufacturing of ceramic, textured actuators with high strain 11 Department of Materials and Earth Sciences > Material Science DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue 11 Department of Materials and Earth Sciences Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: | 14 May 2013 07:17 |
| Official URL: | http://dx.doi.org/10.1063/1.4805360 |
| Additional Information: | SFB 595 A1 |
| Identification Number: | doi:10.1063/1.4805360 |
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