Microwave dielectric properties of BaO-TeO2 binary compounds

Do Kyun Kwon; Michael T. Lanagan; Thomas R. Shrout

doi:10.1016/j.matlet.2006.07.141

Microwave dielectric properties of BaO-TeO₂ binary compounds

Do Kyun Kwon, Michael T. Lanagan, Thomas R. Shrout

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

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 ε_r = 10-21, Q × f = 34,000-55,000 GHz, and TCf = - 51 to - 124 ppm/°C, depending on compositions.

Original language	English (US)
Pages (from-to)	1827-1831
Number of pages	5
Journal	Materials Letters
Volume	61
Issue number	8-9
DOIs	https://doi.org/10.1016/j.matlet.2006.07.141
State	Published - Apr 2007

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Microwave dielectric properties of BaO-TeO2 binary compounds",

abstract = "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.",

author = "Kwon, {Do Kyun} and Lanagan, {Michael T.} and Shrout, {Thomas R.}",

note = "Funding Information: This work was supported by the National Science Foundation, as part of the Center for Dielectric Studies under Grant no. 0120812. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2007",

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doi = "10.1016/j.matlet.2006.07.141",

language = "English (US)",

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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. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/4

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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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