Jo, Wook ; Daniels, John E. ; Jones, Jacob L. ; Tan, Xiaoli ; Thomas, Pamela A. ; Damjanovic, Dragan ; Rödel, Jürgen (2011)
Evolving morphotropic phase boundary in lead-free (Bi[sub 1/2]Na[sub 1/2])TiO[sub 3]–BaTiO[sub 3] piezoceramics.
In: Journal of Applied Physics, 109 (1)
doi: 10.1063/1.3530737
Article, Bibliographie
This is the latest version of this item.
Abstract
The correlation between structure and electrical properties of lead-free (1−x)(Bi1/2Na1/2)TiO3–xBaTiO3 (BNT-100xBT) polycrystalline piezoceramics was investigated systematically by in situ synchrotron diffraction technique, combined with electrical property characterization. It was found that the morphotropic phase boundary (MPB) between a rhombohedral and a tetragonal phase evolved into a morphotropic phase region with electric field. In the unpoled material, the MPB was positioned at the transition from space group R3m to P4mm (BNT-11BT) with optimized permittivity throughout a broad single-phase R3m composition regime. Upon poling, a range of compositions from BNT-6BT to BNT-11BT became two-phase mixture, and maximum piezoelectric coefficient was observed in BNT-7BT. It was shown that optimized electrical properties are related primarily to the capacity for domain texturing and not to phase coexistence.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Jo, Wook ; Daniels, John E. ; Jones, Jacob L. ; Tan, Xiaoli ; Thomas, Pamela A. ; Damjanovic, Dragan ; Rödel, Jürgen |
| Type of entry: | Bibliographie |
| Title: | Evolving morphotropic phase boundary in lead-free (Bi[sub 1/2]Na[sub 1/2])TiO[sub 3]–BaTiO[sub 3] piezoceramics |
| Language: | English |
| Date: | January 2011 |
| Journal or Publication Title: | Journal of Applied Physics |
| Volume of the journal: | 109 |
| Issue Number: | 1 |
| DOI: | 10.1063/1.3530737 |
| Abstract: | The correlation between structure and electrical properties of lead-free (1−x)(Bi1/2Na1/2)TiO3–xBaTiO3 (BNT-100xBT) polycrystalline piezoceramics was investigated systematically by in situ synchrotron diffraction technique, combined with electrical property characterization. It was found that the morphotropic phase boundary (MPB) between a rhombohedral and a tetragonal phase evolved into a morphotropic phase region with electric field. In the unpoled material, the MPB was positioned at the transition from space group R3m to P4mm (BNT-11BT) with optimized permittivity throughout a broad single-phase R3m composition regime. Upon poling, a range of compositions from BNT-6BT to BNT-11BT became two-phase mixture, and maximum piezoelectric coefficient was observed in BNT-7BT. It was shown that optimized electrical properties are related primarily to the capacity for domain texturing and not to phase coexistence. |
| Uncontrolled Keywords: | barium compounds, ferroelectric ceramics, ferroelectric transitions, mixtures, permittivity, piezoceramics, sodium compounds, space groups, texture |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 15 Jun 2011 08:14 |
| Last Modified: | 05 Mar 2013 09:48 |
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Available Versions of this Item
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Evolving morphotropic phase boundary in lead-free (Bi1/2Na1/2)TiO3–BaTiO3 piezoceramics. (deposited 18 May 2011 15:20)
- Evolving morphotropic phase boundary in lead-free (Bi[sub 1/2]Na[sub 1/2])TiO[sub 3]–BaTiO[sub 3] piezoceramics. (deposited 15 Jun 2011 08:14) [Currently Displayed]
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