The influence of BaTiO3 nanocrystals on the electrical characteristics and energy storage capabilities of BNKT ceramics

IF 6.8 3区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Science: Advanced Materials and Devices Pub Date : 2025-05-28 DOI:10.1016/j.jsamd.2025.100918

Piewpan Parjansri , Kanchit Kamlangkla , Sukum Eitssayeam , Uraiwan Inthata

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引用次数: 0

Abstract

This study demonstrates that the incorporation of BaTiO₃ (BT) nanocrystals improved the electrical characteristics of lead-free Bi_0.5(Na_0.4K_0.1)_0.5TiO₃ (BNKT) ceramic. The molten-salt technique was employed to produce nanocrystal seeds. Upon mixing BNKT with BT nanocrystal seeds, the phase structure exhibited a combination of rhombohedral and tetragonal phases. The ceramics exhibit bulk density values ranging from 5.82 to 5.88 g/cm³, with a theoretical density of 97–98 %. A doping BT seed concentration of 0.02 yielded an optimum density value of 5.88 g/cm³ and a dielectric constant of around 1566. The highest ε_r value is 4575 for the sample containing a BT seed of 0.06 mol. The incorporation of BT seed = 0.02 resulted in optimal energy storage density (W), energy efficiency (η), maximum strain (%S_max), and strain coefficient (d∗₃₃) of 0.57 J/cm³, 67.13 %, 0.21 %, and 351.67 pm/V, respectively.

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BaTiO3纳米晶对BNKT陶瓷电学特性和储能性能的影响

研究表明，BaTiO3 （BT）纳米晶的掺入改善了无铅Bi0.5(Na0.4K0.1)0.5TiO3 （BNKT）陶瓷的电学特性。采用熔盐法制备纳米晶种子。将BNKT与BT纳米晶种子混合后，其相结构呈现出菱形和四方相的组合。陶瓷的体积密度范围为5.82 ~ 5.88 g/cm3，理论密度为97 ~ 98%。当BT种子掺杂浓度为0.02时，最佳密度值为5.88 g/cm3，介电常数约为1566。当BT种子含量为0.06 mol时，εr值最高为4575。BT种子= 0.02的最佳储能密度(W)、能量效率（η）、最大应变（%Smax）和应变系数（d∗33）分别为0.57 J/cm3、67.13%、0.21%和351.67 pm/V。

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来源期刊

Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

11.90

自引率

2.50%

发文量

审稿时长

47 days

期刊介绍： In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.