Highly enhanced dielectric tunable performance in Ba0.6Sr0.4TiO3 ceramics via Li2ZnTi3O8 addition

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-08-29 DOI:10.1016/j.jeurceramsoc.2025.117775

Diming Xu , Wei Wang , Ruitao Li , Zhen Fang , Shuwei Ma , Haobo Zhang , Tao Zhou , Wenfeng Liu , Di Zhou

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引用次数: 0

Abstract

Dielectric tunability research on Ba_0.6Sr_0.4TiO₃-based (BST) materials has drawn sufficient attention in recent years. However, tailoring permittivity (ε_r) while maintaining low loss (tanδ) and high tunability (T) remains a critical challenge. Herein, we focused on the dielectric tunability performance of BST with Li₂ZnTi₃O₈ (LZT) addition to address the requirements. BST-LZT ceramics were synthesized with multiple characterizations to confirm a dual-phase microstructure devoid of cation interdiffusion or grain morphology changes. The dielectric behavior of BST-LZT ceramics mirrors pristine BST but with systematically reduced ε_r proportional to LZT content. Such reduction could be fitted using a parallel capacitor model. Remarkably, dielectric tunable performances of BST-LZT ceramics are all exceptionally excellent where ε_r of 990 – 200, tanδ of ∼ 3 × 10⁻³, T of 20–30 %. This study presents a promising candidate, LZT, to engineer BST-based ceramics for dielectric tunable applications where targeted permittivity, minimal loss, and outstanding tunability could be achieved.

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通过添加Li2ZnTi3O8，大大提高了Ba0.6Sr0.4TiO3陶瓷的介电可调性能

近年来，ba0.6 sr0.4 tio3基（BST）材料的介电可调性研究引起了人们的广泛关注。然而，在保持低损耗（tanδ）和高可调性(T)的同时调整介电常数（εr）仍然是一个关键的挑战。为此，我们重点研究了添加Li2ZnTi3O8 （LZT）的BST的介电可调谐性能。对BST-LZT陶瓷进行了多种表征，证实其为双相结构，无阳离子互扩散，晶粒形貌无变化。BST-LZT陶瓷的介电行为反映了原始的BST，但εr与LZT含量成正比。这种减少可以用并联电容器模型来拟合。值得注意的是，BST-LZT陶瓷的介电可调谐性能都非常优异，εr为990 - 200，tanδ为~ 3 × 10−3，T为20-30 %。本研究提出了一种有前途的候选材料LZT，用于设计基于bst的陶瓷，用于介电可调应用，可以实现目标介电常数，最小损耗和出色的可调性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.