Physics of the Solid State
Volumes and Issues
Crystal structure, microstructure, piezoelectric and dielectric properties of high-temperature piezoceramics Bi3-xNdxTi1.5W0.5O9 (x=0, 0.1, 0.2)
Zubkov S. V.1, Parinov I. A.2, Nazarenko A. V.2,3, Kuprina Yu. A.1
1Scientific Research Institute of Physics, Southern Federal University, Rostov-on-Don, Russia
2I.I. Vorovich Institute of Mathematics, Mechanics and Computer Science, Southern Federal University, Rostov-on-Don, Russia
3Federal Research Center Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
Email: svzubkov61@mail.ru

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A new series of perovskite-like oxides Bi3-xNdxTi1.5W0.5O9 (x=0, 0.1, 0.2) has been synthesized by the method of high-temperature solid-state reaction. The X-ray diffraction study showed that the compounds are single-phase and have the structure of the family of Aurivillius phases with parameters close to the orthorhombic unit cell corresponding to the space group A21am. The relative permittivity ε/ε0 and loss angle tangent tgsigma are measured as functions of temperature at different frequencies. The piezoelectric modulus d33 was measured for the synthesized compounds. The microstructure of Bi3-xNdxTi1.5W0.5O9 (x=0, 0.1, 0.2) was obtained. The study of the microstructure shows that the crystallites have a shape characteristic of Aurivillius phases. Keywords: Aurivillius phases, Bi2.8Nd0.2Ti1.5W0.5O9, activation energy Ea, Curie temperature TC.
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