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NALLAGATLA, Venkata Raveendra, MAIER, Christian, GLETTLER, Jürgen, FETEIRA, Antonio, REICHMANN, Klaus and DELUCA, Marco (2024). Synergistic Homovalent and Heterovalent Substitution Effects on Piezoelectric and Relaxor Behavior in Lead-Free BaTiO3 Ceramics. Journal of the European Ceramic Society, 44 (14): 116689.
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Abstract
This study investigates lead-free BaTiO3 (BT) perovskite ceramics, unraveling the synergistic effects arising from simultaneous homovalent (Zr) and heterovalent (Nb) substitution. Focusing on piezoelectric, ferroelectric, and relaxor behaviors, this research employs a comprehensive suite of analyses, including temperature-dependent dielectric measurements, polarization-electric field hysteresis loops, and bipolar strain measurements. Significantly, our study unveils that the simultaneous substitution of Zr and Nb in the BT lattice induces room-temperature relaxor behavior at relatively low concentrations (5% Zr and 3% Nb), yielding higher permittivity and larger maximum polarization compared to single element (Zr or Nb) substituted BT relaxors. Bipolar strain measurements showcase substantial large-signal d 33 ⁎ values (~250pm/V) across a broad temperature range (–50 °C to 30 °C) for BT ceramics with simultaneous 5% Zr and 2% Nb substitution. This research advances understanding of homovalent and heterovalent substitution in BT ceramics and opens avenues for tailoring properties to suit specific applications.
| Item Type: | Article |
|---|---|
| Additional Information: | ** Article version: AM ** Embargo end date: 31-12-9999 ** From Elsevier via Jisc Publications Router ** Licence for AM version of this article: This article is under embargo with an end date yet to be finalised. **Journal IDs: issn 09552219 **History: issued 21-06-2024; accepted 20-06-2024 |
| Identification Number: | https://doi.org/10.1016/j.jeurceramsoc.2024.116689 |
| SWORD Depositor: | Colin Knott |
| Depositing User: | Colin Knott |
| Date Deposited: | 25 Jun 2024 14:50 |
| Last Modified: | 01 Jul 2024 14:45 |
| URI: | https://shura.shu.ac.uk/id/eprint/33875 |
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