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http://dx.doi.org/10.3740/MRSK.2006.16.12.747

Low Temperature Sintering and Tunable Dielectrics Properties of Thick Films added of Li2CO3 on BST  

Jeon, So-Hyun (Department of Materials Engineering, Kyungnam University)
Kim, In-Sung (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Jung, Sun-Jong (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Song, Jae-Sung (Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute)
Yoon, Jon-Do (Department of Materials Engineering, Kyungnam University)
Publication Information
Korean Journal of Materials Research / v.16, no.12, 2006 , pp. 747-753 More about this Journal
Abstract
(BaSr)$TiO_3$ (BST) thick films were prepared by tape casting method, using $BaTiO_3$ and $SrTiO_3$ powder slurry and their dielectric properties were investigated. With an additive, $Li_2CO_3$, the sintering temperature was lowered by $200^{\circ}C$. Sintering density was 5.7 g/$cm^3$ and the BST thick films exhibited a maximum dielectric constant, tunability at temperatures near phase transition point. Whilst their characteristics were deteriorated above the phase transition temperature, they were unchanged below the phase transition temperature, which is presumedly due to the acceleration of $90^{\circ}$ domain formation, its contribution to the relaxation of internal stress and the increase in sintering according to the replacement of Li.
Keywords
BST; $Li_2CO_3$; tunability; dielectrics properties;
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Times Cited By KSCI : 2  (Citation Analysis)
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