High piezoelectric response and polymorphic phase region in the lead-free piezoelectric BaTiO3-CaTiO3-BaSnO3 ternary system
| dc.contributor.author | Janbua, Wanwisa | |
| dc.contributor.author | Bongkarn, Theerachai | |
| dc.contributor.author | Kolodiazhnyi, Taras | |
| dc.contributor.author | Vittayakorn, Naratip | |
| dc.date.accessioned | 2026-08-06T10:15:34Z | |
| dc.date.available | 2026-08-06T10:15:34Z | |
| dc.date.issued | 2017-01-01 | |
| dc.description.abstract | This study attempted to replace Pb-based piezoelectric ceramics with a non-toxic lead-free (Ba,Ca)(Ti,Sn)O<inf>3</inf> substitute, according to current environmental standards. The design of the (Ba<inf>(0.825+x)</inf>Ca<inf>(0.175-x)</inf>)(Ti<inf>(1-x)</inf>Sn<inf>x</inf>)O<inf>3</inf> lead-free piezoceramics reported herein was based on chemical modifications by varying Sn concentrations (x = 0.0500-0.1250). The effect of Sn ion modifications on structural evolution and dielectric, ferroelectric and piezoelectric properties was investigated. Partial substitution of Ti with Sn yields a suitable composition with multiphase boundaries near room temperature. As a result, the composition, x = 0.1000, shows outstanding piezoelectric values of d<inf>33</inf> = 515 pC N<sup>-1</sup> and = 1293 pm V<sup>-1</sup> at 10 kV, which are higher than those found in commercially available soft PZT. Furthermore, anomalous dielectric relaxation is far below the rhombohedral to orthorhombic phase transition at T ≈ 90-150 K, and was found clearly in all compositions. The relaxation fitted the Vogel-Fulcher model with an activation energy of E<inf>a</inf> ≈ 20-70 meV and freezing temperature of T<inf>VF</inf> ≈ 65-85 K. | |
| dc.identifier.citation | Rsc Advances, 7(48), 30166-30176, 2017 | |
| dc.identifier.doi | 10.1039/c7ra04017b | |
| dc.identifier.issn | 20462069 | |
| dc.identifier.other | 2-s2.0-85021661689 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/7347 | |
| dc.source | Rsc Advances | |
| dc.title | High piezoelectric response and polymorphic phase region in the lead-free piezoelectric BaTiO3-CaTiO3-BaSnO3 ternary system | |
| dc.type | Article |