Bomlai, P and Milne, SJ (2014) Structural and electrical properties of AgTaO3-modified (Na 0.465K0.465Li0.07) NbO3 lead-free ceramics. Ferroelectrics, 458 (1). 98 - 105. ISSN 0015-0193
Abstract
The (1-x)(Na0.465K0.465Li0.07)NbO 3 - xAgTaO3 lead-free ceramics were fabricated by the solid-state reaction process. The densification enhanced with increasing AgTaO3 content, giving maximum relative density of 98% (x = 0.02). Both orthorhombic-tetragonal (TO-T) and tetragonal-cubic (T C) phase transition temperature decreased gradually with the increasing AgTaO3 content. The ceramic with a composition of x = 0.02 exhibited excellent electrical properties: the dielectric constant (εr) = 470, dissipation factor (tan δ) = 0.022, piezoelectric constant d33 = 160 pC/N, and Curie temperature T C = 432°C. These results clearly showed that the 0.98(Na 0.465K0.465Li0.07)NbO3 - 0.02AgTaO3 ceramics are very promising lead-free piezoelectric candidates.
Metadata
| Authors/Creators: |
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| Keywords: | lead-free ceramic; reaction sintering; solid solution |
| Dates: |
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| Institution: | The University of Leeds |
| Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
| Depositing User: | Symplectic Publications |
| Date Deposited: | 01 Jul 2015 11:37 |
| Last Modified: | 01 Jul 2015 11:37 |
| Published Version: | http://dx.doi.org/10.1080/00150193.2013.850016 |
| Status: | Published |
| Publisher: | Taylor and Francis |
| Identification Number: | https://doi.org/10.1080/00150193.2013.850016 |
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