TY - JOUR
T1 - Microwave dielectric properties of BaO-TeO2 binary compounds
AU - Kwon, Do Kyun
AU - Lanagan, Michael T.
AU - Shrout, Thomas R.
N1 - Funding Information:
This work was supported by the National Science Foundation, as part of the Center for Dielectric Studies under Grant no. 0120812.
PY - 2007/4
Y1 - 2007/4
N2 - A series of BaO-TeO2 binary ceramic compounds were explored for microwave dielectric applications with ultra-low processing temperatures. During the calcination of mixed BaCO3 and TeO2 raw powders, BaTe4O9, BaTe2O6, BaTeO3, and Ba2TeO5 phases were obtained through the sequential phase formations from Te-rich to Ba-rich phases at temperatures ranging from 500 to 850 °C. Sintering temperatures were as low as only 550 °C for the Te-rich phases. Barium tellurate ceramics exhibited excellent microwave dielectric properties with intermediate dielectric permittivities and high quality factors (Q). The dielectric properties at microwave frequencies were εr = 10-21, Q × f = 34,000-55,000 GHz, and TCf = - 51 to - 124 ppm/°C, depending on compositions.
AB - A series of BaO-TeO2 binary ceramic compounds were explored for microwave dielectric applications with ultra-low processing temperatures. During the calcination of mixed BaCO3 and TeO2 raw powders, BaTe4O9, BaTe2O6, BaTeO3, and Ba2TeO5 phases were obtained through the sequential phase formations from Te-rich to Ba-rich phases at temperatures ranging from 500 to 850 °C. Sintering temperatures were as low as only 550 °C for the Te-rich phases. Barium tellurate ceramics exhibited excellent microwave dielectric properties with intermediate dielectric permittivities and high quality factors (Q). The dielectric properties at microwave frequencies were εr = 10-21, Q × f = 34,000-55,000 GHz, and TCf = - 51 to - 124 ppm/°C, depending on compositions.
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U2 - 10.1016/j.matlet.2006.07.141
DO - 10.1016/j.matlet.2006.07.141
M3 - Article
AN - SCOPUS:33847632540
VL - 61
SP - 1827
EP - 1831
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
IS - 8-9
ER -