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Improvement in Dielectric and Tunable Properties of Fe-Doped Ba0.6Sr0.4TiO3 Thin Films Grown by Pulsed Laser Deposition

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6 Author(s)
Gong, Jia ; Shanghai Univ., Shanghai ; Jinrong Cheng ; Weicheng Zhu ; Shengwen Yu
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Fe-doped Ba0.6Sr0.4TiO3 (BST) thin films were prepared on Pt/Si substrates by the pulsed laser deposition method. The concentrations of Fe dopants vary from 0.1 mol% to 1.0 mol%. Our results indicate that a certain amount of Fe dopants can decrease the dielectric loss of BST thin films without causing the significant reduction of the tunability. The leakage current of BST thin films was also reduced by addition of Fe dopants. BST thin films doped with 0.3 mol% Fe ions show a minimum dielectric loss of 0.88 % at 10 Hz, which is 1.7 % for the undoped BST films. Moreover, the 0.3 mol% Fe-doped BST films reveal a maximum figure of merit (FOM) of 51, indicating the improved comprehensive dielectric and tunable properties.

Published in:
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Date of Conference: 27-31 May 2007

Page(s):
216 - 218
ISSN :
1099-4734
E-ISBN :
978-1-4244-1334-8
Print ISBN:
978-1-4244-1334-8
INSPEC Accession Number:
9810151
Conference Location :
Nara
Digital Object Identifier :
10.1109/ISAF.2007.4393219
Product Type:
Conference Publications

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