Microwave conductivity of boron-doped nanodiamond particles

Cuenca, Jerome A. ORCID: https://orcid.org/0000-0003-1370-1167, Sugai, Seiya, Nakamura, Shunsuke, Miyake, Yudai, Morgan, David J. ORCID: https://orcid.org/0000-0002-6571-5731, Kondo, Takeshi, Thomas, Evan L. H., Mandal, Soumen ORCID: https://orcid.org/0000-0001-8912-1439, Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 and Williams, Oliver A. ORCID: https://orcid.org/0000-0002-7210-3004 2023. Microwave conductivity of boron-doped nanodiamond particles. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November - 02 December 2022. 2022 Asia-Pacific Microwave Conference (APMC). IEEE, 10.23919/APMC55665.2022.9999762

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Abstract

Boron doped diamond particles (BDDP) have been investigated using dielectric spectroscopy from 100 Hz to 10 GHz using a combination of microwave cavity perturbation and the broadband coaxial probe method. Raman and x-ray photoelectron spectroscopy demonstrate that the BDDP consist of both diamond and a considerable concentration of non-diamond carbon. The electrical conductivity increases with the boron to carbon (B/C) ratio in the fabrication process. The microwave complex permittivity also increases with increasing B/C ratio from, with loss tangent increasing from 0.4 to as large as unity, demonstrating the potential for BDDP in tuneable microwave absorber additives.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	IEEE
ISBN:	978-4-902339-56-7
Last Modified:	06 Jan 2024 02:38
URI:	https://orca.cardiff.ac.uk/id/eprint/156482

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