Polar nano-clusters in nominally paraelectric ceramics demonstrating high microwave tunability for wireless communication
dc.contributor.author | Zhang, H | |
dc.contributor.author | Giddens, H | |
dc.contributor.author | Yue, Y | |
dc.contributor.author | Xu, X | |
dc.contributor.author | Araullo-Peters, V | |
dc.contributor.author | Koval, V | |
dc.contributor.author | Palma, M | |
dc.contributor.author | Abrahams, I | |
dc.contributor.author | Yan, H | |
dc.contributor.author | Hao, Y | |
dc.date.accessioned | 2020-06-03T09:22:56Z | |
dc.date.available | 2020-04-08 | |
dc.date.available | 2020-06-03T09:22:56Z | |
dc.date.issued | 2020-04-19 | |
dc.identifier.citation | Zhang, H., Giddens, H., Yue, Y., Xu, X., Araullo-Peters, V., Koval, V., Palma, M., Abrahams, I., Yan, H. and Hao, Y., 2020. Polar nano-clusters in nominally paraelectric ceramics demonstrating high microwave tunability for wireless communication. Journal of the European Ceramic Society, [online] Available at: <https://www.sciencedirect.com/science/article/pii/S0955221920302843?via%3Dihub> [Accessed 3 June 2020]. | en_US |
dc.identifier.issn | 0955-2219 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/64614 | |
dc.description.abstract | Dielectric materials, with high tunability at microwave frequencies, are key components in the design of microwave communication systems. Dense Ba0.6Sr0.4TiO3 (BST) ceramics, with different grain sizes, were prepared in order to optimise the dielectric tunability via polar nano cluster effects. Dielectric permittivity and loss measurements were performed at both high and low frequencies and were supported by results from X-ray powder diffraction, scanning and transmission electron microscopies, Raman spectroscopy and piezoresponse force microscopy. The concentration of polar nano clusters, whose sizes are found to be in the range 20–50 nm, and the dielectric tunability increase with increasing grain size. A novel method for measurement of the microwave tunability in bulk dielectrics is presented. The highest tunability of 32 % is achieved in ceramics with an average grain size of 10 μm. The tunability of BST ceramics with applied DC field is demonstrated in a prototype small resonant antenna. | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartof | Journal of the European Ceramic Society | |
dc.rights | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.title | Polar nano-clusters in nominally paraelectric ceramics demonstrating high microwave tunability for wireless communication | en_US |
dc.type | Article | en_US |
dc.rights.holder | © 2020 The Author(s). | |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2020.04.015 | |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
dcterms.dateAccepted | 2020-04-08 | |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
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