Magnetism, spintronics

Microstructure, crystal structure, dielectric and piezoelectric properties of solid solutions SrBi$_{2-x}$Nd$_x$Nb$_2$O$_9$ ($x$ = 0.0, 0.1, 0.2, 0.3)

S. V. Zubkov^a, I. A. Parinov^b, A. V. Nazarenko^c, Yu. V. Prus<sup>d

a</sup> Research Institute of Physics, Southern Federal University
^b Institute of Mathematics, Mechanics and Computer Sciences, Southern Federal University, Rostov-on-Don
^c Southern Research Center of the Russian Academy of Sciences, Rostov-on-Don
^d Agency on Monitoring and Forecast of Emergency Situations, Moscow

Abstract: A new series of solid solutions of the Aurivillius–Smolensky phase family SrBi$_{2-x}$Nd$_x$Nb$_2$O$_9$ ($x$ = 0.0, 0.1, 0.2, 0.3) was synthesized by the high-temperature solid-phase reaction method. X-ray diffraction analysis showed that all the synthesized compounds are single-phase and have the structure of the Aurivillius–Smolensky phase family (ASF) with parameters close to the orthorhombic unit cell corresponding to the space group A2$_1$ am. For the synthesized compound, the temperature dependences of the relative permittivity $\varepsilon/\varepsilon_0$ and the loss tangent $\operatorname{tg}\sigma$ at different frequencies, as well as the piezoelectric modulus $d_{33}$ were measured; the microstructure and hysteresis loops were investigated.

Keywords: Aurivillius–Smolensky phases, SrBi$_{2-x}$Nd$_x$Nb$_2$O$_9$, Curie temperature $T_\mathrm{C}$, microstructure, permittivity $\varepsilon/\varepsilon_0$.

Received: 08.07.2025
Revised: 28.07.2025
Accepted: 31.07.2025

DOI: 10.61011/FTT.2025.08.61321.179-25

Bibliographic databases:

•