TY - JOUR
T1 - Effect of oxygen partial pressure during liquid-phase sintering on the dielectric properties of 0.9MgTiO3-0.1CaTiO3
AU - Shin, Hyunho
AU - Shin, Hee Kyun
AU - Bae, Shin Tae
AU - Lee, Sangwook
AU - Hong, Kug Sun
PY - 2008/1
Y1 - 2008/1
N2 - Microstructural evolution and microwave dielectric properties of liquid-phase-sintered 0.9MgTiO3-0.1CaTiO3 dielectric ceramic material have been investigated as a function of oxygen partial pressure () during sintering. Sintering in a weakly reducing atmosphere (=10 -14 atm) generally increased the density, permittivity, quality factor (Q × f), and the temperature coefficient of resonance frequency (τf), but further reducing atmosphere down to of 10-14 atm generally decreased Q × f and τf. When the 5 wt% lithium borosilicate glass-added specimen was sintered at 950°C and =10 -14 atm, it demonstrated a permittivity of 18.8, Q × f of 19 000 GHz, and τf of 10 × 10-6 K-1.
AB - Microstructural evolution and microwave dielectric properties of liquid-phase-sintered 0.9MgTiO3-0.1CaTiO3 dielectric ceramic material have been investigated as a function of oxygen partial pressure () during sintering. Sintering in a weakly reducing atmosphere (=10 -14 atm) generally increased the density, permittivity, quality factor (Q × f), and the temperature coefficient of resonance frequency (τf), but further reducing atmosphere down to of 10-14 atm generally decreased Q × f and τf. When the 5 wt% lithium borosilicate glass-added specimen was sintered at 950°C and =10 -14 atm, it demonstrated a permittivity of 18.8, Q × f of 19 000 GHz, and τf of 10 × 10-6 K-1.
UR - http://www.scopus.com/inward/record.url?scp=37849048237&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2007.02016.x
DO - 10.1111/j.1551-2916.2007.02016.x
M3 - Article
AN - SCOPUS:37849048237
SN - 0002-7820
VL - 91
SP - 132
EP - 138
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 1
ER -