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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Baker-Jarvis, James
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2006Variable-temperature microwave dielectric properties of singlecrystal fluorides
- 2004TE018 Dielectric-Resonator Technique for Precise Measurements of the Complex Permittivity of Lossy Liquids at Frequencies Below 1 GHz*citations
- 2004Dielectric characterization of single-crystal LiF, CaF 2, MgF 2, BaF 2 , and SrF 2 at microwave frequencies
- 2004Dielectric characterization of single-crystal LiF, CaF/sub 2/, MgF/sub 2/, BaF/sub 2/, and SrF/sub 2/at microwave frequenciescitations
- 2003Complex Permittivity Measurements of Common Plastics over Variable Temperaturescitations
- 2000Complex permittivity measurements of single-crystal and ceramic strontium titanate at microwave frequencies and cryogenic temperaturescitations
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booksection
Variable-temperature microwave dielectric properties of singlecrystal fluorides
Abstract
<p>Lithium, calcium, magnesium, and barium fluorides have widespread use in UV, IR, and scintillation applications. Although their optical properties have been well-studied, little data exist on their dielectric properties at microwave frequencies. Microwave dielectric properties of single-crystal LiF, CaF2, MgF2, BaF2, and SrF2, synthesized by Stockbarger melt-growth techniques, are measured using cylindrical specimens as TE <sub>01δ</sub> dielectric resonators enclosed in a cylindrical cavity. Single-crystal permittivity and dielectric loss tangent were evaluated at fixed frequencies between 7 and 9 GHz and over a temperature range from -75 to 150°C. The real permittivities of the measured fluorides increase quasi-linearly with temperature, permitting evaluation of the thermal coefficients of permittivity. The dielectric loss tangents increase approximately linearly with frequency, so that Qf (GHz) products at room temperature for BaF <sub>2</sub>, SrF <sub>2</sub> , CaF <sub>2</sub>, LiF, and MgF <sub>2</sub> (normal to c-axis) are 57600, 73000, 92000, 192400, and 458600, respectively.</p>