Structure, microstructure, and functional properties of modified sodium niobate ceramics

被引：0

作者：

Politova, E. D. ^{[1
]}

Kaleva, G. M. ^{[1
]}

Mosunov, A. V. ^{[2
]}

Sadovskaya, N. V. ^{[3
]}

Fortalnova, E. A. ^{[4
]}

Shur, V. Ya. ^{[5
]}

Ushakov, A. D. ^{[5
]}

Faizullin, M. Z. ^{[6
]}

机构：

[1] Russian Acad Sci, NN Semenov Fed Res Ctr Chem Phys, Moscow, Russia

[2] Lomonosov Moscow State Univ, Fac Chem, Moscow, Russia

[3] Russian Acad Sci, Inst Crystallog, Fed Res Ctr Crystallog & Photon, Moscow, Russia

[4] RUDN Univ, Peoples Friendship Univ Russia, Moscow, Russia

[5] Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg, Russia

[6] RAS, Inst Thermal Phys, Ural Branch, Ekaterinburg, Russia

来源：

FERROELECTRICS | 2024年 / 618卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

Sodium niobate; perovskite structure; microstructure; functional properties; LEAD-FREE PIEZOCERAMICS; ELECTROCALORIC RESPONSE; STABILITY;

D O I：

10.1080/00150193.2024.2305582

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ceramic samples of new compositions (1-x)(0.9NaNbO3 - 0.1BaTiO3) - xBaZrO3 (x = 0 divided by 0.05) modified by SiO2 oxide additive were prepared; their phase composition, structure parameters, microstructure, dielectric and ferroelectric properties were studied. Formation of a phase with a perovskite structure with a tetragonal unit cell was established, which volume increased due to partial replacement of A and B cations by Ba2+ and Zr4+ ones with large ionic radii. Decrease in the temperature of ferroelectric phase transitions and corresponding increase in polarization and electrocaloric effect indicates a positive effect of doping on the functional properties of sodium niobate-based ceramics.

引用

页码：1422 / 1430

页数：9

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