Effect of the sintering technique on the ferroelectric and d33 piezoelectric coefficients of Bi0.5(Na0.84K0.16)0.5TiO3 ceramic

G. HERNANDEZ-CUEVAS; J. R. LEYVA MENDOZA; P. E. GARCÍA-CASILLAS; C. A. RODRÍGUEZ GONZÁLEZ; J. F. HERNANDEZ-PAZ; G. HERRERA-PÉREZ; L. FUENTES-COBAS; S. DÍAZ DE LA TORRE; O. RAYMOND-HERRERA; H. CAMACHO-MONTES

doi:10.1007/s40145-019-0314-8

Journal of Advanced Ceramics 2019, 8(2): 278-288 https://doi.org/10.1007/s40145-019-0314-8

Research Article |

Open Access | Issue | Published: 13 June 2019

Effect of the sintering technique on the ferroelectric and d₃₃ piezoelectric coefficients of Bi_0.5(Na_0.84K_0.16)_0.5TiO₃ ceramic

Show Author's Information Hide Author's Information G. HERNANDEZ-CUEVAS^{^a}, J. R. LEYVA MENDOZA^{^a}, P. E. GARCÍA-CASILLAS^{^a}, C. A. RODRÍGUEZ GONZÁLEZ^{^a}, J. F. HERNANDEZ-PAZ^{^a}, G. HERRERA-PÉREZ^{^b}, L. FUENTES-COBAS^{^b}, S. DÍAZ DE LA TORRE^{^c}, O. RAYMOND-HERRERA^{^d}, H. CAMACHO-MONTES^{^a}(

)

a Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez, Av. Del Charro 450 Norte Cd. Juárez, Chihuahua, 32310, México

b Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Chihuahua 31109, Chihuahua, México

c Centro de Investigación e Innovación Tecnológica, Instituto Politécnico Nacional, Cerrada de Cecati s/n, Azcapotzalco, Santa Catarina, 02250, Ciudad de México, México

d Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Km. 107 Carretera Tijuana-Ensenada, AP. 14, Ensenada 22860, Baja California, México

Keywords:

spark plasma sintering (SPS), lead-free piezoelectrics, sol-gel, pressureless sintering (PLS), sinter-forging (SF), piezoresponse

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HERNANDEZ-CUEVAS G, LEYVA MENDOZA JR, GARCÍA-CASILLAS PE, et al. Effect of the sintering technique on the ferroelectric and d₃₃ piezoelectric coefficients of Bi_0.5(Na_0.84K_0.16)_0.5TiO₃ ceramic. Journal of Advanced Ceramics, 2019, 8(2): 278-288. https://doi.org/10.1007/s40145-019-0314-8

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Abstract Full text Electronic supplementary material About this article

Abstract

In the search of lead-free piezoelectric materials, ceramic processing techniques offer potential tools to increase the piezoelectric and ferroelectric properties in addition to new chemical compositions. Powders of pure BNKT16 (Bi_0.5(Na_0.84K_0.16)_0.5TiO₃) phase were synthesized by sol-gel method with a low crystallization temperature (750 ℃). Ceramic samples were sintered by pressureless sintering (PLS), sinter-forging (SF), and spark plasma sintering (SPS) techniques. Structural, morphological, and chemical characterizations were performed by XRD, Raman, EDS, and SEM. Sintered samples by PLS and SF exhibit rod-like grains associated to bismuth volatility. The highest remanent polarization (11.05 µC/cm²), coercive field (26.2 kV/mm), and piezoelectric coefficient (165 pC/N) were obtained for SF sample. The piezoresponse force microscopy (PFM) analysis shows that the crystallites at the nanoscale exhibit piezoelectric phenomenon and the highest piezoelectric response is reported for PLS sample. The presence of the rhombohedral phase, the increase in grain and crystallite size, and the oriented rod-like inclusions favoring the crystallographic texture are facts that enhance the piezoelectric coefficient for BNKT16 piezoceramics.

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About this article

Effect of the sintering technique on the ferroelectric and d₃₃ piezoelectric coefficients of Bi_0.5(Na_0.84K_0.16)_0.5TiO₃ ceramic

Show Author's information Hide Author's Information G. HERNANDEZ-CUEVAS^{^a}, J. R. LEYVA MENDOZA^{^a}, P. E. GARCÍA-CASILLAS^{^a}, C. A. RODRÍGUEZ GONZÁLEZ^{^a}, J. F. HERNANDEZ-PAZ^{^a}, G. HERRERA-PÉREZ^{^b}, L. FUENTES-COBAS^{^b}, S. DÍAZ DE LA TORRE^{^c}, O. RAYMOND-HERRERA^{^d}, H. CAMACHO-MONTES^{^a}(

)

a Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez, Av. Del Charro 450 Norte Cd. Juárez, Chihuahua, 32310, México

b Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Chihuahua 31109, Chihuahua, México

c Centro de Investigación e Innovación Tecnológica, Instituto Politécnico Nacional, Cerrada de Cecati s/n, Azcapotzalco, Santa Catarina, 02250, Ciudad de México, México

d Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Km. 107 Carretera Tijuana-Ensenada, AP. 14, Ensenada 22860, Baja California, México

Abstract

Keywords: spark plasma sintering (SPS), lead-free piezoelectrics, sol-gel, pressureless sintering (PLS), sinter-forging (SF), piezoresponse

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Publication history

Received: 24 September 2018

Revised: 13 December 2018

Accepted: 03 January 2019

Published: 13 June 2019

Issue date: June 2019

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Acknowledgements

The authors are indebted to CONACYT grant A1-S-9232 for their valuable support. GHC and JRLM are grateful to CONACYT for the Ph.D. scholarship.

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