TY - JOUR
T1 - Phase evolution and dielectric properties of (Mg0.95M 0.052+)Ti2O5 (M2+=Co, Ni, and Zn) ceramics at microwave frequencies
AU - Huang, Cheng Liang
AU - Shen, Chun Hsu
PY - 2009/2
Y1 - 2009/2
N2 - Being the second phase in the (Mg0.95M0.05 2+)Ti2O5 (M2+=Co, Ni, and Zn) ceramics, the sintering behavior and microwave dielectric properties of specimens using (Mg0.95M0.052+)Ti 2O5 were investigated. (Mg0.95M 0.052+)Ti2O5 solid solutions were detected throughout the entire experiment. Lattice parameters were also measured for specimens with different M2+ to confirm the formation of solid solutions. The sintering temperature of (Mg0.95Co0.05) Ti2O5 was 25°C lower than those of the others. The (Mg0.95M0.052+)Ti2O5 ceramics, in this study, acquired the following microwave dielectric properties: εr of 16-18.5, Q × f of 28 000-68 000 GHz, and τf of -38∼-47 ppm/°C. Compatible εr and τf values were obtained in comparison with that of (Mg 0.95M0.052+)TiO3 ceramics. However, it showed a much lower Q × f, indicating that the formation of (Mg 0.95M0.052+)Ti2O5 in the (Mg0.95M0.052+)TiO3 ceramics would cause a drastic reduction in the Q × f value.
AB - Being the second phase in the (Mg0.95M0.05 2+)Ti2O5 (M2+=Co, Ni, and Zn) ceramics, the sintering behavior and microwave dielectric properties of specimens using (Mg0.95M0.052+)Ti 2O5 were investigated. (Mg0.95M 0.052+)Ti2O5 solid solutions were detected throughout the entire experiment. Lattice parameters were also measured for specimens with different M2+ to confirm the formation of solid solutions. The sintering temperature of (Mg0.95Co0.05) Ti2O5 was 25°C lower than those of the others. The (Mg0.95M0.052+)Ti2O5 ceramics, in this study, acquired the following microwave dielectric properties: εr of 16-18.5, Q × f of 28 000-68 000 GHz, and τf of -38∼-47 ppm/°C. Compatible εr and τf values were obtained in comparison with that of (Mg 0.95M0.052+)TiO3 ceramics. However, it showed a much lower Q × f, indicating that the formation of (Mg 0.95M0.052+)Ti2O5 in the (Mg0.95M0.052+)TiO3 ceramics would cause a drastic reduction in the Q × f value.
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U2 - 10.1111/j.1551-2916.2008.02831.x
DO - 10.1111/j.1551-2916.2008.02831.x
M3 - Article
AN - SCOPUS:60849087948
SN - 0002-7820
VL - 92
SP - 384
EP - 388
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 2
ER -