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Microstructure and microwave dielectric properties of 3D printed low loss Bi2Mo2O9 ceramics for LTCC applications

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journal contribution
posted on 09.12.2020, 16:49 by Athanasios GoulasAthanasios Goulas, George Chi-Tangyie, Dawei Wang, Shiyu Zhang, Annapoorani KetharamAnnapoorani Ketharam, Vaidhy VaidhyanathanVaidhy Vaidhyanathan, Ian Reaney, Darren Cadman, William WhittowWilliam Whittow, J. C. Vardaxoglou, Daniel EngstromDaniel Engstrom
Low sintering temperature, ultra-low loss microwave ceramics are envisaged as future dielectrics for fabricating low temperature co-fired ceramic (LTCC) components for 5G applications. Low sintering temperature bismuth molybdate β-Bi2Mo2O9 ceramic powders have been synthesised using a solidstate reaction method. Their additive manufacture and resulting microwave properties are reported for the first time. Optimum densification occurred for 3D printed samples sintered 4 hours at 670°C which resulted in a maximum relative density (ρr) of 92%, relative permittivity (εr) of 34, dielectric loss (tanδ) of 0.0007, giving a microwave quality factor (Qxf) of 10,050 GHz, properties attractive for LTCC applications.

Funding

SYnthesizing 3D METAmaterials for RF, microwave and THz applications (SYMETA)

Engineering and Physical Sciences Research Council

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History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering
  • Mechanical, Electrical and Manufacturing Engineering

Department

  • Materials

Published in

Applied Materials Today

Volume

21

Publisher

Elsevier

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Applied Materials Today and the definitive published version is available at https://doi.org/10.1016/j.apmt.2020.100862.

Acceptance date

18/10/2020

Publication date

2020-10-24

Copyright date

2020

ISSN

2352-9407

Language

en

Depositor

Dr Thanos Goulas Deposit date: 18 October 2020

Article number

100862