Temperature dependent dielectric, ferroelectric and energy storage properties in Bi0.5Na0.5TiO3(BNT) nanoparticles

被引:10
作者
Kumari, Manju [1 ]
Chahar, Meenu [1 ]
Shankar, S. [2 ]
Thakur, O. P. [1 ]
机构
[1] Netaji Subhas Univ Technol Erstwhile NSIT, Dept Phys, Mat Anal & Res Lab, New Delhi 110078, India
[2] Univ Delhi, ARSD Coll, Dept Phys, Expt Res Lab, New Delhi 110021, India
关键词
Bismuth Sodium Titanate; Nanoparticles; Ferroelectric; Dielectric; MULTIFERROIC PROPERTIES; BISMUTH; FERROMAGNETISM; DENSITY;
D O I
10.1016/j.matpr.2022.06.542
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nanoparticles of Bi0.5Na0.5TiO3 (BNT) were synthesized by sol-gel method. Structural and morphological studies of BNT nanoparticles have been made using X-Ray Diffraction (XRD), Scanning electron microscopy with energy dispersive spectroscopy (EDS) as well as FT-IR confirms formation of nanospheres with crystallite size 23 nm. BNT nanoparticles displayed a decrease in dielectric constant with the frequency owing to Maxwell-Wagner polarization. The temperature dependence of dielectric constant at different fixed frequencies of the BNT nanoparticles showed two distinctive peaks at 283 degrees C and 322 degrees C attributed to the phase transition from ferroelectric to antiferroelectric and antiferroelectric to paraelectric phases respectively. Ferroelectric studies displayed enhancement in polarization (P-r = 12.75 mu C/cm(2)) with increasing temperature and electric field. The energy storage studies of BNT nanoparticles showed improvement with temperature and indicate their potential for silicon-based memory devices and other energy storage devices. (C) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on "Recent Advances in Functional Materials".
引用
收藏
页码:688 / 693
页数:6
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