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Tse, Yau
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Publications (9/9 displayed)
- 2012Line defects, planar defects and voids in SrTiO3 films grown on MgO by pulsed laser and pulsed laser interval depositioncitations
- 2010Microstructural investigation of strontium titanate films grown by interval pulsed laser depositioncitations
- 2009Two-dimensional growth of SrTiO3 thin films on (001) MgO substrates using pulsed laser deposition and reflection high energy electron diffractioncitations
- 2009Comparison of structural, microstructural, and electrical analyses of barium strontium titanate thin filmscitations
- 2008Growth and Microstructural Studies of Strontium Titanate Films Grown by Standard and Interval Pulsed Laser Depositioncitations
- 2007Microstructural study of a YBCO multilayer coated conductor cylindercitations
- 2006Microstructure of Homeoepitaxial SrTiO₃ Thin Films Grown by Laser Ablationcitations
- 2006Temperature Dependent Dielectric Properties of Coplanar Phase Shifters Fabricated from Ba₀.₅SR₀.₅Ti0₃ Thin Filmscitations
- 2006Microwave and Microstructural Properties of Ba₀.₅Sr₀.₅TiO₃ of Thin Film Coplanar Phase Shifterscitations
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article
Temperature Dependent Dielectric Properties of Coplanar Phase Shifters Fabricated from Ba₀.₅SR₀.₅Ti0₃ Thin Films
Abstract
This paper presents an analysis of the temperature dependent properties and performance of coplanar waveguide transmission lines on Ba0.5Sr0.5TiO3 (BST) thin films. Comparison of the temperature dependent permittivity at microwave frequencies with models of heterogeneous ferroelectrics reveals significant physical properties, such as the Curie temperature, Curie-Weiss constant, and statistical defects in the films. The maximum phase shift and tunability are obtained at the temperature where the permittivity is highest.