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PFM characterization of (K0.5Na0.5)0.95La0.05(Nb0.9Ti0.05)O2.9 ceramics lead free

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Abstract

The results of ferroelectric properties studies of KNN doped with La and Ti and sintered at temperatures in the interval of 1100 °C–1190 °C are presented in this work. The doping was achieved by the substitution of La for ions in A sites and Ti for ions in the B sites. Values of 94 % of the theoretical density were accomplished. The effect of the sintering temperature and the inclusion of the La and Ti cations in the KNN structure is evident through the shift in the ferroelectric-paraelectric transition temperature of ∼110 °C with respect to that of pure KNN (420 °C). Microstructure and ferroelectric analyses were carried out using Piezoresponse Force Microscopy (PFM) and hysteresis loops with interesting results, ΔP r=9 (μC/cm2) and P r/P max=0.41, even when the saturation of the materials is not reached.

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Acknowledgements

This research was supported by project PNCB 10/09, Cuba, the Sabbatical program and project CB 82843 of CONACYT Mexico. The authors are also grateful to Ing. M. Landaverde and Ing. M. Hernández for technical assistance and Dr. E. Prokhorov for offering help and discussion.

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Authors and Affiliations

  1. Departamento de Física Aplicada, Instituto de Cibernética, Matemática y Física, CITMA, 15 # 551, Vedado, La Habana, 10400, Cuba

    M. D. Durruthy-Rodríguez

  2. CINVESTAV-Unidad Querétaro, IPN, Libramiento Norponiente # 2000, Fracc. Real de Juriquilla, 76230, Santiago de Querétaro, Querétaro, México

    M. D. Durruthy-Rodríguez, J. J. Gervacio-Arciniega, J. M. Yáñez-Limón & F. J. Espinoza-Beltrán

  3. Facultad de Física, Universidad de La Habana, San Lázaro y L, Vedado, La Habana, CP, 10400, Cuba

    J. Portelles, J. Fuentes & A. Pérez

  4. Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, AP 14, Ensenada, 22860, B.C., México

    J. Portelles, J. Fuentes, O. Raymond & J. M. Siqueiros

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  1. M. D. Durruthy-Rodríguez
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  2. J. J. Gervacio-Arciniega
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Correspondence to M. D. Durruthy-Rodríguez.

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Durruthy-Rodríguez, M.D., Gervacio-Arciniega, J.J., Portelles, J. et al. PFM characterization of (K0.5Na0.5)0.95La0.05(Nb0.9Ti0.05)O2.9 ceramics lead free. Appl. Phys. A 113, 515–519 (2013). https://doi.org/10.1007/s00339-013-7562-1

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  • DOI: https://doi.org/10.1007/s00339-013-7562-1

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