TY - JOUR
T1 - Low temperature sintering and microwave dielectric properties of Ba 3Ti5Nb6O28 with B2O 3 and CuO additions
AU - Kim, Jeong Ryeol
AU - Kim, Dong Wan
AU - Yoon, Sung Hun
AU - Hong, Kug Sun
N1 - Funding Information:
Acknowledgments This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/12
Y1 - 2006/12
N2 - The low sintering temperature and the good dielectric properties such as high dielectric constant (ε r ), high quality factor (Q × f), and small temperature coefficient of resonant frequency (TCF) are required for the application of chip passive components in wireless communication low temperature co-fired ceramics (LTCC). In the present study, the sintering behaviors and dielectric properties of Ba3Ti5Nb 6O28 ceramics were investigated as a function of B 2O3-CuO content. The pure Ba3Ti 5Nb6O28 system showed a high sintering temperature (1250°C) and had the good microwave dielectric properties: Q × f of 10,600 GHz, ε r of 37, TCF of -12 ppm/°C. The addition of B2O3-CuO was revealed to lower the sintering temperature of Ba3Ti5Nb6O28, 900°C and to enhance the microwave dielectric properties: Q × f of 32,500 GHz, ε r of 40, TCF of 9 ppm/°C. From the X-ray photoelectron spectroscopy (XPS) and X-ray powder diffraction (XRD) studies, these phenomena were explained in terms of the reduction of oxygen vacancies and the formation of secondary phases having the good microwave dielectric properties.
AB - The low sintering temperature and the good dielectric properties such as high dielectric constant (ε r ), high quality factor (Q × f), and small temperature coefficient of resonant frequency (TCF) are required for the application of chip passive components in wireless communication low temperature co-fired ceramics (LTCC). In the present study, the sintering behaviors and dielectric properties of Ba3Ti5Nb 6O28 ceramics were investigated as a function of B 2O3-CuO content. The pure Ba3Ti 5Nb6O28 system showed a high sintering temperature (1250°C) and had the good microwave dielectric properties: Q × f of 10,600 GHz, ε r of 37, TCF of -12 ppm/°C. The addition of B2O3-CuO was revealed to lower the sintering temperature of Ba3Ti5Nb6O28, 900°C and to enhance the microwave dielectric properties: Q × f of 32,500 GHz, ε r of 40, TCF of 9 ppm/°C. From the X-ray photoelectron spectroscopy (XPS) and X-ray powder diffraction (XRD) studies, these phenomena were explained in terms of the reduction of oxygen vacancies and the formation of secondary phases having the good microwave dielectric properties.
KW - BaTiNbO
KW - Dielectric properties
KW - Low temperature sintering
KW - XPS
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U2 - 10.1007/s10832-006-0453-5
DO - 10.1007/s10832-006-0453-5
M3 - Article
AN - SCOPUS:33847229882
VL - 17
SP - 439
EP - 443
JO - Journal of Electroceramics
JF - Journal of Electroceramics
SN - 1385-3449
IS - 2-4
ER -