Effects of Ag+ substitution on the enhanced microwave dielectric properties of Na4Co(MoO4)3 ceramics

Meng Chi Lin; I. Chun Ling; Tsung Hsien Hsu; Chi Yuen Huang; Cheng Liang Huang

doi:10.1016/j.ceramint.2023.12.025

Effects of Ag⁺ substitution on the enhanced microwave dielectric properties of Na₄Co(MoO₄)₃ ceramics

Meng Chi Lin, I. Chun Ling, Tsung Hsien Hsu, Chi Yuen Huang, Cheng Liang Huang

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Novel Na_4-xAg_xCo(MoO₄)₃ (x = 0–0.09) compounds were prepared using a solid state ceramic route. The investigation focused on the impact of intrinsic and extrinsic factors on the microwave dielectric properties of the samples. All samples were identified as belonging to the monoclinic structure with the C2/c space group. An optimal combination of microwave dielectric properties (ε_r = 8.55, Q × f = 30,300 GHz and τ_f = –30 ppm/°C) can be obtained for pure Na₄Co(MoO₄)₃ specimen fired at 660 °C. Partially replacing Na⁺ with Ag⁺ in Na_4-xAg_xCo(MoO₄)₃ ceramics resulted in a more stable structure and significantly increased the Q × f value to 64,000 GHz at x = 0.03. Additionally, the study suggested that Na_3.95Ag_0.05Co(MoO₄)₃, sintered at 600 °C, could be a very promising candidate for ULTCC applications at microwave and millimeter wave frequencies due to its high thermal stability. This compound exhibited tremendous microwave dielectric properties (ε_r = 9.2, Q × f = 53,000 GHz and τ_f = –9.8 ppm/°C), which fit well within the criteria for today's 5G/6G applications, and demonstrated good compatibility with Al pastes. The designed and fabricated hairpin filter on the Na_3.95Ag_0.05Co(MoO₄)₃ substrate also demonstrated an excellent frequency response for 5G/6G applications.

Original language	English
Pages (from-to)	6814-6823
Number of pages	10
Journal	Ceramics International
Volume	50
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2023.12.025
Publication status	Published - 2024 Feb 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2023.12.025

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title = "Effects of Ag+ substitution on the enhanced microwave dielectric properties of Na4Co(MoO4)3 ceramics",

abstract = "Novel Na4-xAgxCo(MoO4)3 (x = 0–0.09) compounds were prepared using a solid state ceramic route. The investigation focused on the impact of intrinsic and extrinsic factors on the microwave dielectric properties of the samples. All samples were identified as belonging to the monoclinic structure with the C2/c space group. An optimal combination of microwave dielectric properties (εr = 8.55, Q × f = 30,300 GHz and τf = –30 ppm/°C) can be obtained for pure Na4Co(MoO4)3 specimen fired at 660 °C. Partially replacing Na+ with Ag+ in Na4-xAgxCo(MoO4)3 ceramics resulted in a more stable structure and significantly increased the Q × f value to 64,000 GHz at x = 0.03. Additionally, the study suggested that Na3.95Ag0.05Co(MoO4)3, sintered at 600 °C, could be a very promising candidate for ULTCC applications at microwave and millimeter wave frequencies due to its high thermal stability. This compound exhibited tremendous microwave dielectric properties (εr = 9.2, Q × f = 53,000 GHz and τf = –9.8 ppm/°C), which fit well within the criteria for today's 5G/6G applications, and demonstrated good compatibility with Al pastes. The designed and fabricated hairpin filter on the Na3.95Ag0.05Co(MoO4)3 substrate also demonstrated an excellent frequency response for 5G/6G applications.",

author = "Lin, {Meng Chi} and Ling, {I. Chun} and Hsu, {Tsung Hsien} and Huang, {Chi Yuen} and Huang, {Cheng Liang}",

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T1 - Effects of Ag+ substitution on the enhanced microwave dielectric properties of Na4Co(MoO4)3 ceramics

AU - Lin, Meng Chi

AU - Ling, I. Chun

AU - Hsu, Tsung Hsien

AU - Huang, Chi Yuen

AU - Huang, Cheng Liang

PY - 2024/2/15

Y1 - 2024/2/15

N2 - Novel Na4-xAgxCo(MoO4)3 (x = 0–0.09) compounds were prepared using a solid state ceramic route. The investigation focused on the impact of intrinsic and extrinsic factors on the microwave dielectric properties of the samples. All samples were identified as belonging to the monoclinic structure with the C2/c space group. An optimal combination of microwave dielectric properties (εr = 8.55, Q × f = 30,300 GHz and τf = –30 ppm/°C) can be obtained for pure Na4Co(MoO4)3 specimen fired at 660 °C. Partially replacing Na+ with Ag+ in Na4-xAgxCo(MoO4)3 ceramics resulted in a more stable structure and significantly increased the Q × f value to 64,000 GHz at x = 0.03. Additionally, the study suggested that Na3.95Ag0.05Co(MoO4)3, sintered at 600 °C, could be a very promising candidate for ULTCC applications at microwave and millimeter wave frequencies due to its high thermal stability. This compound exhibited tremendous microwave dielectric properties (εr = 9.2, Q × f = 53,000 GHz and τf = –9.8 ppm/°C), which fit well within the criteria for today's 5G/6G applications, and demonstrated good compatibility with Al pastes. The designed and fabricated hairpin filter on the Na3.95Ag0.05Co(MoO4)3 substrate also demonstrated an excellent frequency response for 5G/6G applications.

AB - Novel Na4-xAgxCo(MoO4)3 (x = 0–0.09) compounds were prepared using a solid state ceramic route. The investigation focused on the impact of intrinsic and extrinsic factors on the microwave dielectric properties of the samples. All samples were identified as belonging to the monoclinic structure with the C2/c space group. An optimal combination of microwave dielectric properties (εr = 8.55, Q × f = 30,300 GHz and τf = –30 ppm/°C) can be obtained for pure Na4Co(MoO4)3 specimen fired at 660 °C. Partially replacing Na+ with Ag+ in Na4-xAgxCo(MoO4)3 ceramics resulted in a more stable structure and significantly increased the Q × f value to 64,000 GHz at x = 0.03. Additionally, the study suggested that Na3.95Ag0.05Co(MoO4)3, sintered at 600 °C, could be a very promising candidate for ULTCC applications at microwave and millimeter wave frequencies due to its high thermal stability. This compound exhibited tremendous microwave dielectric properties (εr = 9.2, Q × f = 53,000 GHz and τf = –9.8 ppm/°C), which fit well within the criteria for today's 5G/6G applications, and demonstrated good compatibility with Al pastes. The designed and fabricated hairpin filter on the Na3.95Ag0.05Co(MoO4)3 substrate also demonstrated an excellent frequency response for 5G/6G applications.

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JF - Ceramics International

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Effects of Ag⁺ substitution on the enhanced microwave dielectric properties of Na₄Co(MoO₄)₃ ceramics

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