Preparation of ($1-x$)(Ba,Sr)TiO3–$x$MgTiO3 Based Thick Films by Inkjet Printing

概要

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($1-x$)(Ba0.6Sr0.4)TiO3–$x$MgTiO3 ($x=0--0.01$) thick film patterns were prepared by the inkjet method. The dielectric properties and tunabilities of the thick films were examined. The Curie temperature was shifted to a lower temperature by adding MgTiO3. The value of $\tan\delta$ was improved by adding a small amount of MgTiO3. In order to improve the electric properties of the thick films, the effects of adding SiO2 to 0.995(Ba0.6Sr0.4)TiO3–0.005MgTiO3 thick films were investigated. The dielectric constant without DC electric field and the tunability at 10 V/μm DC electric field were approximately 2300 and 70%, respectively, when 0.5 wt % SiO2 was added to the thick films. When the amount of SiO2 added was too large, the Ba2TiSi2O8 phase appeared and the electric properties deteriorated. These results indicate that the MgTiO3 solute and the addition of SiO2 were effective for improving the electric properties of the thick films prepared by the inkjet method.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2007-10-30