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http://dx.doi.org/10.4191/KCERS.2002.39.2.159

Preparation of PMN-PT-BT Powder by Modified Mixed Oxide Method and Effect of Ag on Dielectric Properties  

Lim, Kyoung-Ran (Division of Materials Science and Engineering, KIST)
Jeong, Soon-Yong (Division of Materials Science and Engineering, KIST)
Kim, Chang-Sam (Division of Materials Science and Engineering, KIST)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.2, 2002 , pp. 159-163 More about this Journal
Abstract
A single phase perovskite relaxor ferroelectric PMN-PT-BT was prepared by a single calcination and the modified mixed oxide process. It was accomplished by ball-milling PbO, $Nb_2O_5,\;Ti(OC_3H_7)_4,\;BaCO_3,\;and\;Mg(NO_3)_2$ instead of MgO, removing the solvent, and then followed by calcination at 900$^{\circ}C$ for 2h. The specimen sintered at 1100$^{\circ}C$/2h showed the sintered density of 7.83 g/$cm^3$, room temperature dielectric constant of 22000, and dielectric loss of 2.5%. Addition of 1.0 mole% (0.3 wt%) of Ag as $AgNO_3$ and followed by calcination at 550$^{\circ}C$/2h lowered the sintering temperature to 900$^{\circ}C$. It still showed the sintered density of 7.88 g/$cm^3$, room temperature dielectric constant of 20000 and dielectric loss of 2.4%.
Keywords
PMN-PT-BT; Perovskite; Single-calcination; Ag; Low-temperature-sinterable; Low dielectric loss;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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