Formation of Niobate Complex Glass-Ceramic and Effect of Crystal Nucleates on Dielectric Properties

被引：0

作者：

Guo, Hongwei ^{[1
]}

Zhu, Nantian ^{[1
]}

Bai, Yun ^{[1
]}

Gao, Yibo ^{[1
]}

Guo, Shouyi ^{[1
]}

Buchanan, Relva C. ^{[2
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China

[2] Univ Cincinnati, Coll Engn & Appl Sci, Dept Mech & Mat Engn, Cincinnati, OH 45221 USA

来源：

CRYSTAL GROWTH & DESIGN | 2024年 / 24卷 / 03期

关键词：

ENERGY-STORAGE PROPERTIES; CRYSTALLIZATION KINETICS; DENSITY; PHASE; BEHAVIOR;

D O I：

10.1021/acs.cgd.3c01316

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Glass-ceramics have great potential as a dielectric material in energy storage. Grain refinement is an effective measure to improve the energy storage performance of dielectric materials. In this study, NaNbO3-Ba0.27Sr0.75Nb2O6 (NN-BSN) complex glass-ceramic was prepared through the investigation and design of heat-treatment processes. The NN perovskite structure and BSN tungsten bronze structure are comparable, and heat treatment was employed to encapsulate the two phases, thereby achieving grain refinement. High-resolution transmission electron microscopy (HR-TEM) images were measured using Gatan Digital software, revealing a maximum lattice spacing of 0.067 nm in the selected area and a maximum interplanar spacing of 0.003 nm(-1) in the SAED pattern. Furthermore, the influence of ZrO2 and TiO2, with equal content, on the material structure and performance stability was studied. Raman analysis revealed that ZrO2 exists as an intermediate network in the structure, resulting in good high-temperature stability of the samples. TiO2 acted as a crystal nucleating agent, promoting grain growth and enhancing the polarization performance of the samples.

引用

页码：1357 / 1366

页数：10

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