Low loss tunable dielectric BaNd2Ti5O14- (Ba0.5Sr0.5)TiO3 composite thick films
authors Vilarinho, PM; Fu, Z; Kingon, AI; Tkach, A
nationality International
journal SCRIPTA MATERIALIA
author keywords BNT-BST; Composite; Thick-films; Dielectrics; High frequencies
keywords BARIUM-STRONTIUM-TITANATE; ELECTROPHORETIC DEPOSITION EPD; MICROWAVE APPLICATIONS; CERAMICS; TUNABILITY; CAPACITORS; DEVICES; PHASE; BAO.ND2O3.5TIO2; FILTERS
abstract An alternative low cost flexible processing is utilized to fabricate tunable dielectric thick-films with low loss. By using a combination of electrophoretic deposition with chemical solution deposition, 9 mu m-thick BaNd2Ti5O14- Baa(5)Sr(0.5)TiO(3) (BNT-BST) composite films are fabricated with a room-temperature relative permittivity of 287 and a loss tangent of 0.0013 at 1 MHz. Moreover, a dielectric tunability and a figure of merit of 12% and 96 at 33 kV/cm, respectively, are obtained by the incorporation of highly tunable ferroelectric BST in a non tunable BNT matrix, thus fitting the requirements of tunable dielectrics for such agile systems as band pass filters. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 1359-6462
year published 2018
volume 155
beginning page 160
ending page 163
digital object identifier (doi) 10.1016/j.scriptamat.2018.06.032
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000440958000033
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