TY - GEN
T1 - Materials design with enhanced temperature stability of resonant frequency for high frequency application
AU - Kim, Dong Wan
AU - Hong, Kug Sun
PY - 2007
Y1 - 2007
N2 - For low temperature cofired ceramic (LTCC) materials to achieve increase functionality, as well as low loss and moderate dielectric constant, it is essential to achieve the temperature stability of the resonant frequency. Facing several empirical approaches toward tuning the temperature coefficient of the resonant frequency (τf) through the formation of mixtures or a solid-solution between the two end members with opposite signs of τf, which result in higher dielectric loss, we took a closer look at the texture engineering that determines the anisotropic dielectric properties in barium niobate ceramics. We demonstrate the advantage of texture engineering for microwave dielectric properties including temperature stability by control of crystallographic orientation. Also, the monoclinic rare earth niobates are investigated as novel microwave dielectric materials. Furthermore, the stable τf of the rare earth niobates could be efficiently explained through the ferroelastic domain engineering related to phase transformation.
AB - For low temperature cofired ceramic (LTCC) materials to achieve increase functionality, as well as low loss and moderate dielectric constant, it is essential to achieve the temperature stability of the resonant frequency. Facing several empirical approaches toward tuning the temperature coefficient of the resonant frequency (τf) through the formation of mixtures or a solid-solution between the two end members with opposite signs of τf, which result in higher dielectric loss, we took a closer look at the texture engineering that determines the anisotropic dielectric properties in barium niobate ceramics. We demonstrate the advantage of texture engineering for microwave dielectric properties including temperature stability by control of crystallographic orientation. Also, the monoclinic rare earth niobates are investigated as novel microwave dielectric materials. Furthermore, the stable τf of the rare earth niobates could be efficiently explained through the ferroelastic domain engineering related to phase transformation.
KW - High frequency
KW - Low temperature cofired ceramics
KW - Temperature stability
KW - Texture
UR - http://www.scopus.com/inward/record.url?scp=38549112594&partnerID=8YFLogxK
U2 - 10.4028/3-908451-31-0.173
DO - 10.4028/3-908451-31-0.173
M3 - Conference contribution
AN - SCOPUS:38549112594
SN - 3908451310
SN - 9783908451310
T3 - Solid State Phenomena
SP - 173
EP - 176
BT - Advances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia
PB - Trans Tech Publications Ltd
T2 - IUMRS International Conference in Asia 2006, IUMRS-ICA 2006
Y2 - 10 September 2006 through 14 September 2006
ER -