Электронный каталог

Статья

Golosova, N.O.
Structural and Dielectric Properties of Bi-Substituted Silver Niobate Materials Prospective for High Power Energy Storage / N.O.Golosova, D.P.Kozlenko, O.Yu.Ponomareva, T.N.Vershinina, S.E.Kichanov, E.V.Lukin, O.N.Lis, A.V.Rutkauskas, B.N.Savenko, [a.o.]. – Text : electronic // Ceramics International. – 2026. – Vol. 52, No. 14, Pt. A. – P. 24510-24518. – URL: https://doi.org/10.1016/j.ceramint.2026.04.014. – Bibliogr.: 28.

The AgNbO&sub(3) – based ceramic materials are being extensively studied due to great prospects for development of high power energy storage applications. The structural, dielectric properties and conductivity of Ag&sub(1-3x)Bi&sub(x)NbO&sub(3) (x = 0 – 0.12) materials have been studied using X-ray and neutron diffraction, Raman and dielectric spectroscopy in the temperature range 295 - 700 K. The Bi doping in the studied range allows to stabilize at room temperature the ferrielectric (M&sub(1), x = 0), antiferroelectric (M&sub(2), and M&sub(3), x = 0.04 and 0.08), paraelectric (O&sub(2), x = 0.12) phases. The evolution of structural parameters and dielectric properties over the phase transition sequencies in the studied temperature range have been studied in detail and the x-T structural phase diagram has been constructed. The analysis of structural parameters and cationic displacements in the various phases provided a thorough insight into the microscopic mechanism of polarization properties formation. It is demonstrated that the M&sub(2) antiferroelectric phase is the most prospective for enhancement of recoverable energy storage density and efficiency. A role of oxygen vacancies in the observed behavior of the real part of conductivity and dielectric permittivity upon Bi doping is discussed.



Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
ОИЯИ = ОИЯИ (JINR)2026