Improvement of microwave dielectric properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 ceramics prepared by solid-state reaction

Brahim Itaalit; Mohamed Mouyane; Jérôme Bernard; Jean-Michel Reboul; David Houivet

Improvement of microwave dielectric properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 ceramics prepared by solid-state reaction

Brahim Itaalit ¹ Mohamed Mouyane ¹ Jérôme Bernard ¹ Jean-Michel Reboul ¹ David Houivet ¹

1 LUSAC - Laboratoire Universitaire des Sciences Appliquées de Cherbourg

Abstract : The aqueous mixing technique-assisted solid-state method was used to synthesize Ba(Co0.7Zn0.3)1/3Nb2/3O3 (BCZN) ceramics. The optimum pH of the slurry used for the BCZN synthesis was determined from plots of the Zeta potential (ζ) and the viscosity versus pH. The as-prepared materials were characterized by XRD, TG-DTA, SEM and EDS. The microwave dielectric properties are measured using a network analyzer. Ba5Nb4O15 and Ba8(Co,Zn)1Nb6O24 secondary phases were found on the surface of all samples. The ceramic materials sintered at 1350 °C were found to have a high quality factor Qf of 96132, a high dielectric constant εr of 34.5 and near-zero temperature coefficient of the resonant frequency τf of 0 ppm/°C measured at 6 GHz.

Keywords : Grinding Ceramic Complex perovskite Microwave dielectric Ba(Co0.7Zn0.3)1/3Nb2/3O3

Type de document :

Article dans une revue

Domaine :

Sciences de l'ingénieur [physics]

Sciences de l'environnement

Physique [physics]

Sciences de l'ingénieur [physics] / Matériaux

Sciences de l'ingénieur [physics] / Milieux fluides et réactifs

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https://hal-normandie-univ.archives-ouvertes.fr/hal-02157673
Contributeur : Christine Rouil <>
Soumis le : lundi 17 juin 2019 - 11:34:37
Dernière modification le : mercredi 2 octobre 2019 - 17:04:03

Improvement of microwave dielectric properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 ceramics prepared by solid-state reaction

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Improvement of microwave dielectric properties of Ba(Co0.7Zn0.3)1/3Nb2/3O3 ceramics prepared by solid-state reaction

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