期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 533, 期 -, 页码 25-28出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.04.010
关键词
BST; SPS; Tunablilty
Zr doped Ba0.6Sr0.4TiO3 ceramic was sintered by spark plasma sintering (SPS) and thermal treatment. Sintering behavior, microstructure and dielectric properties of the BST ceramics were investigated by XRD, SEM and impedance analyzer. High dense Ba0.6Sr0.4(Zr0.2Ti0.8)O-3 ceramic with 98.2% of the theoretical density was fabricated at 1270 degrees C for 5 min. The dielectric constant of this sample reduced to 850 at 100 kHz, the tunability of the ceramic increased to 57% (1.5 kV/mm, 298 K) and the figure of merit (EOM) value increased to 475, which is promising material for tunable devices application. (C) 2012 Elsevier B.V. All rights reserved.
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