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
|