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Low-temperature sintered Ba16ZrNb12O48-BaWO4 composite ceramics with near-zero τf and enhanced Q×f for LTCC applications


Citation

Yu, Zhen Fa and Wang, Chang Hao and Wang, Xin and He, Guoqiang and Ma, Peiwen and Bao, Jian and Fang, Zhen and Xu, Di Ming and Pang, Li Xia and Zhou, Tao and Tan, Kar Ban and Zhou, Di (2025) Low-temperature sintered Ba16ZrNb12O48-BaWO4 composite ceramics with near-zero τf and enhanced Q×f for LTCC applications. Journal of the European Ceramic Society, 46 (5). art. no. 118054. pp. 1-7. ISSN 0955-2219; eISSN: 1873-619X

Abstract

Perovskite-structured ceramics are promising for their tunable properties, while LTCC technology requires low sintering temperatures and near-zero τ f . BaCu(B4O8) as a sintering aid reduced Ba16ZrNb12O48’s sintering temperature from 1450 ℃ to 1000 ℃. A two-phase strategy designed (1 − x )Ba16ZrNb12O48- x BaWO4 + 5 wt% BaCu(B4O8) ( x = 0.88–0.93) ceramics for τ f modulation. Ba16ZrNb12O48 with 5 wt% BaCu(B4O8) densified at 1000 ℃, yielding ε r = 32.6, Q×f = 22,400 GHz, τ f = +44.2 ppm/℃, and ρ bulk = 5.83 g/cm3. Notably, x = 0.92 with 5 wt% BaCu(B4O8), co-fired at 950 ℃ and annealed, achieved τ f = +7.4 ppm/℃ (near-zero), Q×f = 29,100 GHz, and ε r = 20.0. XRD/SEM-EDS confirmed chemical inertness and no Cu diffusion at the ceramic/electrode interface. These features make it a promising LTCC candidate.


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Additional Metadata

Item Type: Article
Subject: Ceramics and Composites
Subject: Materials Chemistry
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1016/j.jeurceramsoc.2025.118054
Publisher: Elsevier
Keywords: Ba16ZrNb12O48; BaWO4; LTCC; Microwave dielectric ceramics; Near-zero resonance frequency temperature coefficient
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 26 Jan 2026 00:48
Last Modified: 26 Jan 2026 00:48
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jeurceramsoc.2025.118054
URI: http://psasir.upm.edu.my/id/eprint/122496
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