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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 9/2024

01.03.2024

Enhancing microwave dielectric properties of Na5Tb(MoO4)4 ceramics by substituting Ag into the Na site

verfasst von: Cheng-Liang Huang, Ting-Hao Lin, I.-Chun Ling, Tsung-Hsien Hsu

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 9/2024

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Abstract

The structures and microwave dielectric properties of Na5−xAgxTb(MoO4)4 ceramics were explored. Single Na5Tb(MoO4)4 phased solid solutions were obtained for specimens with x values ranging from 0 to 0.07, with a small amount of Mo-rich second phase detected at x = 0.09. Although the solid solution range is very limited, the advantage of silver substitution is that it lowers the sintering temperature, increases the densification, and enhances the dielectric properties of the ceramics. The P–V–L bond theory was employed to analyze the correlations between the chemical bond parameters and microwave dielectric properties, which were predominantly influenced by the ionicity and lattice energy of the Tb–O bond. The Na3.93Ag0.07Tb(MoO4)4 compound sintered at 530 °C exhibited excellent microwave dielectric properties (εr = 8.5, Q × f = 54,000 GHz and τf =  − 24 ppm/°C), which are very promising for microwave and millimeter wave applications.
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Metadaten
Titel
Enhancing microwave dielectric properties of Na5Tb(MoO4)4 ceramics by substituting Ag into the Na site
verfasst von
Cheng-Liang Huang
Ting-Hao Lin
I.-Chun Ling
Tsung-Hsien Hsu
Publikationsdatum
01.03.2024
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 9/2024
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-024-12431-9

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