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Microwave dielectric properties of BaO−2CeO2−nTiO2 ceramics |
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| Authors: | H Sreemoolanadhan MT Sebastian R Ratheesh R Blachnik B Schneider P Mohanan |
| Institution: | a Regional Research Laboratory, Ceramic Technology Division, Industrial Estate P.O., Papanamcode, Trivandrum, Kerala 695019, India b Anorganische Chemie, Universitat Osnabrueck, D-49069 Osnabrueck, Germany c Fachbereich Physik, Universitat Osnabrueck, D-49069 Osnabrueck, Germany d Department of Electronics, Cochin University of Science & Technology, Kochi 682022, India |
| Abstract: | The BaO-2CeO2-nTiO2 ceramics with n=3, 4 and 5 have been prepared with CeO2 as starting material. The ceramics have been characterized using scanning electron microscopy, X-ray diffraction, Raman and X-ray photoelectron spectroscopy techniques. The microwave dielectric properties have been measured using standard dielectric resonator techniques. BaO-2CeO2-3TiO2 (123), BaO-2CeO2-4TiO2 (124) and BaO-2CeO2-5TiO2 (125) ceramics showed dielectric constants of 38, 27 and 32, respectively. All the ceramics showed fairly good unloaded Q-factors. 124 and 125 compounds exhibited low τf values, while 123 showed a high τf value. |
| Keywords: | Dielectric resonators Microwave ceramics Barium cerium titanates Low-loss materials |
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