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Potassium–Sodium Ceramics Modified with Metal Oxide Additives: Synthesis, Microstructure, and Properties
- Authors: Kaleva G.M.1, Politova E.D.1, Mosunov A.V.2, Stefanovich S.Y.2, Sadovskaya N.V.3
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Affiliations:
- Semenov Institute of Chemical Physics
- Faculty of Chemistry, Moscow State University
- Institute of Crystallography, Federal Research Center of Crystallography and Photonics, Russian Academy of Sciences
- Issue: Vol 97, No 1 (2023)
- Pages: 95-100
- Section: СТРОЕНИЕ ВЕЩЕСТВА И КВАНТОВАЯ ХИМИЯ
- Submitted: 27.02.2025
- Published: 01.01.2023
- URL: https://rjonco.com/0044-4537/article/view/668890
- DOI: https://doi.org/10.31857/S0044453723010144
- EDN: https://elibrary.ru/BCBOYX
- ID: 668890
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Abstract
Single phase ceramic samples of new compounds (1 − x)(K0.5Na0.5)NbO3−xLa(Ag0.5Sb0.5)O3 (x = 0–0.15), modified by metal oxide additives ZnO, CuO, and MnO2, are prepared via a solid state reaction. The crystal structure, microstructure, and dielectric and ferroelectric properties of the samples are studied. It is established that a phase with a perovskite structure and an orthorhombic unit cell formed in each sample. Ferroelectric phase transitions are confirmed via dielectric spectroscopy. Generation of the second harmonic is observed, along with a drop in the temperature of transitions from the ferroelectric orthorhombic phase to the ferroelectric tetragonal phase, and then to the cubic paraelectric phase.
About the authors
G. M. Kaleva
Semenov Institute of Chemical Physics
Email: kaleva@nifhi.ru
119991, Moscow, Russia
E. D. Politova
Semenov Institute of Chemical Physics
Email: kaleva@nifhi.ru
119991, Moscow, Russia
A. V. Mosunov
Faculty of Chemistry, Moscow State University
Email: kaleva@nifhi.ru
119991, Moscow, Russia
S. Yu. Stefanovich
Faculty of Chemistry, Moscow State University
Email: kaleva@nifhi.ru
119991, Moscow, Russia
N. V. Sadovskaya
Institute of Crystallography, Federal Research Center of Crystallography and Photonics, Russian Academy of Sciences
Author for correspondence.
Email: kaleva@nifhi.ru
119333, Moscow, Russia
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