Study of the phase transitions of the lead-free piezoceramics by mechanical spectroscopy

• Grant number: 12/08457-7
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2013
• End date: February 28, 2015
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Paulo Sergio da Silva Junior
• Grantee: Paulo Sergio da Silva Junior
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: Ariano De Giovanni Rodrigues ; Jean-Claude Mpeko ; Michel Venet Zambrano ; Odila Florêncio

Abstract

Founded on the current concern about the rapid increasing of the amount of waste from electrical and electronic equipment and their recycling and safe disposal, several countries have created and implemented regulations such as the Europeans WEEE and RoHS. These legislations aim to prohibit and restrict certain hazardous substances in products, such as lead and PZT, making necessary the developing of the lead-free piezoceramics to substitute PZT applications. Bismuth-based solid solutions, as a BNT-BT and BKT-BNT-BT, are the most promising candidates to substitute for PZT, since they combine several essential features, such as a absence of (or low) toxicity, low cost, electronic and crystalline structures similar to PZT, and presence of morphotropic phase boundary (MPB). However, for their technological applications, the good understanding of the role played by the effect of dopants and chemical modifications in the properties of the bismuth ceramics is needed. The main goal of this research project is the study of phase transitions of bismuth-based lead-free piezoceramics at around MPB compositions, in which the effects of dopants and chemical modifications in the phase transitions of these materials will be analyzed by mechanical spectroscopy, using a Dynamic Mechanical Analysis (DMA) equipment. Through mechanical spectroscopy technique, it can obtain information about phase transitions and relaxation behavior of the piezoelectric ceramics, and their electromechanical characterization, which are determining factors in the possible application of these materials as piezoelectric transducers and other applications for substitutes to PZT. (AU)

Scientific publications

(12)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CORDERO, F.; TREQUATTRINI, F.; CRACIUN, F.; LANGHAMMER, H. T.; QUIROGA, D. A. B.; SILVA, JR., P. S.. Probing ferroelectricity in highly conducting materials through their elastic response: Persistence of ferroelectricity in metallic BaTiO3-delta. Physical Review B, v. 99, n. 6, FEB 12 2019. (12/08457-7)

BARBOSA QUIROGA, DAVID ANTONIO; CAMILO ALBORNOZ DIAZ, JULIO CESAR; VENET, MICHEL; RODRIGUES, ARIANO DE GIOVANNI; FLORENCIO, ODILA; DA SILVA, JR., PAULO SERGIO. Evolution of crystalline phases and morphotropic phase boundary of the (Bi,Na)TiO3-(Bi,K)TiO3-BaTiO3 lead-free ceramic system. Journal of Alloys and Compounds, v. 691, p. 498-503, JAN 15 2017. (13/00134-7, 12/08457-7)

CORDERO, FRANCESCO; TREQUATTRINI, FRANCESCO; DA SILVA JR, PAULO SERGIO; VENET, MICHEL; AKTAS, OKTAY; SALJE, EKHARD K. H.. Elastic precursor effects during Ba1-xSrxTiO3 ferroelastic phase transitions. PHYSICAL REVIEW RESEARCH, v. 5, n. 1, p. 9-pg., 2023-02-16. (22/08030-5, 12/08457-7)

SILVA, JR., P. S.; DIAZ, J. C. C. A.; FLORENCIO, O.; VENET, M.; M'PEKO, J. C.. ANALYSIS OF THE PHASE TRANSITIONS IN BNT-BT LEAD-FREE CERAMICS AROUND MORPHOTROPIC PHASE BOUNDARY BY MECHANICAL AND DIELECTRIC SPECTROSCOPIES. ARCHIVES OF METALLURGY AND MATERIALS, v. 61, n. 1, p. 17-20, MAR 2016. (12/08457-7)

DIAZ, JULIO CESAR CAMILO ALBORNOZ; VENET, MICHEL; RODRIGUES, ARIANO DE GIOVANNI; QUIROGA, DAVID ANTONIO BARBOSA; CORDERO, FRANCESCO; DA SILVA JR, PAULO SERGIO. Ferroic glass behavior in (Bi,Na)TiO3-based lead-free electroceramics. Journal of Alloys and Compounds, v. 918, p. 8-pg., 2022-10-15. (13/00134-7, 17/17872-1, 12/08457-7)

HE, Z. W.; AKTAS, O.; LINYU, G.; LIU, L-N; DA SILVA JR, P. S.; CORDERO, F.; CHEN, X-M; DING, X.; SALJE, E. K. H.. Depolarization of ferroelectric materials measured by their piezoelectric and elastic response. Journal of Alloys and Compounds, v. 918, p. 8-pg., 2022-10-15. (12/08457-7)

MAZUERA, A. M.; SILVA, JR., P. S.; RODRIGUES, A. D.; PIZANI, P. S.; ROMAGUERA-BARCELAY, Y.; VENET, M.; ALGUERO, M.. Origin of discrepancy between electrical and mechanical anomalies in lead-free (K,Na)NbO3-based ceramics. Physical Review B, v. 94, n. 18, NOV 7 2016. (13/00134-7, 12/08457-7)

CAMILO ALBORNOZ DIAZ, JULIO CESAR; VENET, MICHEL; CORDERO, FRANCESCO; DA SILVA, JR., PAULO SERGIO. Anelastic and optical properties of Bi0.5Na0.5TiO3 and (Bi0.5Na0.5)(0.94)Ba0.06TiO3 lead-free ceramic systems doped with donor Sm3+. Journal of Alloys and Compounds, v. 746, p. 648-652, MAY 25 2018. (12/08457-7, 14/07375-2, 13/00134-7)

CAMILO ALBORNOZ DIAZ, JULIO CESAR; M'PEKO, JEAN-CLAUDE; VENET, MICHEL; DA SILVA JR, PAULO SERGIO. Unveiling the high-temperature dielectric response of Bi0.5Na0.5TiO3. SCIENTIFIC REPORTS, v. 10, n. 1, NOV 10 2020. (13/00134-7, 17/17872-1, 12/08457-7)

DA SILVA, JR., PAULO SERGIO; VENET, MICHEL; FLORENCIO, ODILA. Influence of diffuse phase transition on the anelastic behavior of Nb-doped Pb(Zr0.53Ti0.47)O-3 ceramics. Journal of Alloys and Compounds, v. 647, p. 784-789, OCT 25 2015. (13/00134-7, 12/08457-7)

CORDERO, F.; TREQUATTRINI, F.; CRACIUN, F.; LANGHAMMER, H. T.; QUIROGA, D. A. B.; SILVA, P. S., JR.. Probing ferroelectricity in highly conducting materials through their elastic response: Persistence of ferroelectricity in metallic BaTiO3-delta. PHYSICAL REVIEW B, v. 99, n. 6, p. 10-pg., 2019-02-12. (12/08457-7)

MAZUERA, A. M.; SILVA, P. S., JR.; RODRIGUES, A. D.; PIZANI, P. S.; ROMAGUERA-BARCELAY, Y.; VENET, M.; ALGUERO, M.. Origin of discrepancy between electrical and mechanical anomalies in lead-free (K,Na)NbO3-based ceramics. PHYSICAL REVIEW B, v. 94, n. 18, p. 6-pg., 2016-11-07. (12/08457-7, 13/00134-7)