Abstract
A solid solution between polar perovskite oxides BiInO3 and BiZn1/2Ti1/2O3 with the atomic displacement of Bi3+ and B-site (In and Zn1/2Ti1/2) as the origin of spontaneous electric polarization was investigated. Polar orthorhombic to nonpolar orthorhombic transition accompanied by negative thermal expansion (NTE) with constant volume shrinkage was observed for x ≤ 0.3 in BiIn1-xZnx/2Tix/2O3. A relative shift of electrical polarization from A-site Bi3+ to B-site ions reduced the transition temperature and enabled NTE in a wide temperature range with suppressed temperature hysteresis. In addition, new LiNbO3-type phases were found for 0.4 ≤ x ≤ 0.8 with ferroelastic and piezoelectric behaviors, featuring a very high switching strain and demonstrating the potential for enhanced domain wall mobility.
| Original language | English |
|---|---|
| Pages (from-to) | 1498-1505 |
| Number of pages | 8 |
| Journal | Chemistry of Materials |
| Volume | 33 |
| Issue number | 4 |
| DOIs | |
| State | Published - 23 Feb 2021 |
| Externally published | Yes |