Simons, Hugh ; Daniels, John ; Jo, Wook ; Dittmer, Robert ; Studer, Andrew ; Avdeev, Maxim ; Rödel, Jürgen ; Hoffman, Mark (2011)
Electric-field-induced strain mechanisms in lead-free 94%(Bi[sub 1/2]Na[sub 1/2])TiO[sub 3]–6%BaTiO[sub 3].
In: Applied Physics Letters, 98 (8)
Article
Abstract
High resolution neutron diffraction has been used to investigate the structural origin of the large electric-field-induced remanent strain in 94(Bi1/2Na1/2)TiO3–6BaTiO3 ceramics. The virgin material was found to be a mixture of near-cubic phases with slight tetragonal and rhombohedral distortions of a0a0c+ and a-a-a- octahedral tilt type, respectively. Application of an electric field of 4.57 kV/mm transformed the sample to a predominantly rhombohedral a-a-a- modification with a significantly higher degree of structural distortion and a pronounced preferred orientation of the c-axis along the field direction. These electric field-induced structural effects contribute significantly to the macroscopic strain and polarization of this system.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Simons, Hugh ; Daniels, John ; Jo, Wook ; Dittmer, Robert ; Studer, Andrew ; Avdeev, Maxim ; Rödel, Jürgen ; Hoffman, Mark |
| Type of entry: | Bibliographie |
| Title: | Electric-field-induced strain mechanisms in lead-free 94%(Bi[sub 1/2]Na[sub 1/2])TiO[sub 3]–6%BaTiO[sub 3] |
| Language: | English |
| Date: | February 2011 |
| Journal or Publication Title: | Applied Physics Letters |
| Volume of the journal: | 98 |
| Issue Number: | 8 |
| URL / URN: | http://dx.doi.org/10.1063/1.3557049 |
| Abstract: | High resolution neutron diffraction has been used to investigate the structural origin of the large electric-field-induced remanent strain in 94(Bi1/2Na1/2)TiO3–6BaTiO3 ceramics. The virgin material was found to be a mixture of near-cubic phases with slight tetragonal and rhombohedral distortions of a0a0c+ and a-a-a- octahedral tilt type, respectively. Application of an electric field of 4.57 kV/mm transformed the sample to a predominantly rhombohedral a-a-a- modification with a significantly higher degree of structural distortion and a pronounced preferred orientation of the c-axis along the field direction. These electric field-induced structural effects contribute significantly to the macroscopic strain and polarization of this system. |
| Uncontrolled Keywords: | barium compounds, bismuth compounds, distortion, neutron diffraction, piezoceramics, piezoelectricity, sodium compounds, solid-state phase transformations |
| Identification Number: | doi:10.1063/1.3557049 |
| Additional Information: | SFB 595 A1 |
| 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 > 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 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 Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: | 15 Jun 2011 08:14 |
| Last Modified: | 05 Mar 2013 09:50 |
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