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Fabrication and characterization of composites of a perovskite and polymers with high dielectric permittivity
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Basturk, S. Bahar, Dancer, Claire E. J. and McNally, Tony (2021) Fabrication and characterization of composites of a perovskite and polymers with high dielectric permittivity. Materials Research Bulletin, 135 . 111126. doi:10.1016/j.materresbull.2020.111126 ISSN 0025-5408.
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WRAP-Fabrication-characterization-composites-perovskite-high-permittivity-2020.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1600Kb) | Preview |
Official URL: https://doi.org/10.1016/j.materresbull.2020.111126
Abstract
Composites of strontium titanate (SrTiO3) at loadings up to 50 vol.% with polar poly(butylene terephthalate) (PBT) and non-polar linear low density polyethylene (LLDPE) were prepared to investigate their dielectric responses in the wireless frequency range. The SrTiO3 particles were uniformly dispersed in the polymers at low loadings, but were more bead-like and agglomerated at higher SrTiO3 loadings. The SrTiO3 has a strong nucleating effect on both polymers, increasing the crystallization temperature and reducing the crystallinity of both polymers. Dielectric properties of composites were measured between 2.45−5 GHz. Dielectric permittivity (ε') of composites at 2.45 GHz increased with increasing SrTiO3 content. ε' increased by a factor of 5 for PBT, from 3.7 for unfilled PBT to 16.5 and by a factor of ∼8.5 for unfilled LLDPE, from 2.3 to 19.7 for maximum SrTiO3 loading. The composites had similar dissipation factor values as the unfilled polymers. The Lichtenecker model was in good agreement with the experimental data.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | Electronics -- Materials, Strontium compounds, Polymeric composites, Dielectrics, Microwaves | ||||||||
Journal or Publication Title: | Materials Research Bulletin | ||||||||
Publisher: | Pergamon-Elsevier Science LTD | ||||||||
ISSN: | 0025-5408 | ||||||||
Official Date: | March 2021 | ||||||||
Dates: |
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Volume: | 135 | ||||||||
Article Number: | 111126 | ||||||||
DOI: | 10.1016/j.materresbull.2020.111126 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Copyright Holders: | © 2020 Elsevier Ltd. All rights reserved. | ||||||||
Date of first compliant deposit: | 7 January 2021 | ||||||||
Date of first compliant Open Access: | 15 November 2021 | ||||||||
RIOXX Funder/Project Grant: |
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