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Piezoelectric and ferroelectric properties of K0.5Na0.5NbO3 ceramics synthesized by spray drying method |
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| Authors: | Rigoberto Ló pez,Federico Gonzá lez,M.E. Villafuerte-Castrejon |
| Affiliation: | a Departamento de Materiales Metálicos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, A. P. 70-360, C.P. 04510, México D.F., Mexico b Departamento de Ingeniería de Procesos e Hidráulica, Universidad Autónoma Metropolitana-Iztapalapa, A. P. 55-534, C.P. 09340, México D.F., Mexico c Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, A. P. 356, C.P. 22800, Ensenada, B. C., Mexico |
| Abstract: | Potassium-sodium niobate was synthesized at 800 °C for 1 h using dried precursors in a powder form obtained by the spray drying method. Different samples were sintered from 1060 to 1120 °C for 2 h reaching a relative density as high as 96% of the theoretical value. Piezoelectric and ferroelectric properties were studied for these samples and some of the most prominent results are: kp, d31, 2Pr, and 2EC of 0.36, 39 pC/N, 29 μC/cm2 and 16.5 kV/cm, respectively, for the sample sintered at 1080 °C. The methodology presented in this study can be used to synthesize submicrometer powders. |
| Keywords: | A. Ceramics C. X-ray diffraction D. Ferroelectricity D. Piezoelectricity |
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