✍ Scribed by S. Bastide; D. Duphil; J.-P. Borra; C. Lévy-Clément
No coin nor oath required. For personal study only.
electric" phase transition. Therefore, the sample with x = 0.35 (i.e., z = 0.5) located at the boundary exhibits a very high hysteresis-free electrostrictive strain (∼ 0.1 %) with a electrostrictive coefficient Q of ∼ 10 -2 m 4 C -2 . This indicates that the system is very promising for practical applications as a leadfree electrostrictive material.
The samples of SrTiO 3 doped with Bi and Na were prepared by the solid-state reaction method. The composition was (Sr 1-y-x-f Na y- Bi
x & f )TiO 3 (denoted as SNBT, where & represents Sr vacancies) with y = 0.5z, x = 0.2 + 0.3z, f = 0.1-0.1z, and z = 0, 0.05, 0.1, 0.3, 0.5, and 0.65. The dielectric properties were measured in the temperature range of 12-500 K. The polarization and strain were measured at room temperature by a Sawyer-Tower circuit and a linear variabledisplacement transducer driven by a lock-in amplifier, respectively.
X-ray diffraction analysis showed that all compositions were of single-phase perovskite structures at room temperature.
📜 SIMILAR VOLUMES