Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | http://dx.doi.org/10.3390/ma9030179 https://repositorio.unifesp.br/handle/11600/57847 |
Resumo: | Lead free piezoelectric materials are being intensively investigated in order to substitute lead based ones, commonly used in many different applications. Among the most promising lead-free materials are those with modified NaNbO3, such as (K, Na)NbO3 (KNN) and (Ba, Na)(Ti, Nb)O-3 (BTNN) families. From a ceramic processing point of view, high density single phase KNN and BTNN ceramics are very difficult to sinter due to the volatility of the alkaline elements, the narrow sintering temperature range and the anomalous grain growth. In this work, Spark Plasma Sintering (SPS) and high-energy ball milling (HEBM), following heat treatments (calcining and sintering), in oxidative (O-2) atmosphere have been used to prepare single phase highly densified KNN (pure and Cu2+ or Li1+ doped), with theoretical densities (th) > 97% and BTNN ceramics ((th) similar to 90%), respectively. Using BTTN ceramics with a P4mm perovskite-like structure, we showed that by increasing the NaNbO3 content, the ferroelectric properties change from having a relaxor effect to an almost normal ferroelectric character, while the tetragonality and grain size increase and the shear piezoelectric coefficients (k(15), g(15) and d(15)) improve. For KNN ceramics, the results reveal that the values for remanent polarization as well as for most of the coercive field are quite similar among all compositions. These facts evidenced that Cu2+ may be incorporated into the A and/or B sites of the perovskite structure, having both hardening and softening effects. |
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Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routeslead-free piezoelectricsferroelectricspiezoelectricsspark plasma sinteringLead free piezoelectric materials are being intensively investigated in order to substitute lead based ones, commonly used in many different applications. Among the most promising lead-free materials are those with modified NaNbO3, such as (K, Na)NbO3 (KNN) and (Ba, Na)(Ti, Nb)O-3 (BTNN) families. From a ceramic processing point of view, high density single phase KNN and BTNN ceramics are very difficult to sinter due to the volatility of the alkaline elements, the narrow sintering temperature range and the anomalous grain growth. In this work, Spark Plasma Sintering (SPS) and high-energy ball milling (HEBM), following heat treatments (calcining and sintering), in oxidative (O-2) atmosphere have been used to prepare single phase highly densified KNN (pure and Cu2+ or Li1+ doped), with theoretical densities (th) > 97% and BTNN ceramics ((th) similar to 90%), respectively. Using BTTN ceramics with a P4mm perovskite-like structure, we showed that by increasing the NaNbO3 content, the ferroelectric properties change from having a relaxor effect to an almost normal ferroelectric character, while the tetragonality and grain size increase and the shear piezoelectric coefficients (k(15), g(15) and d(15)) improve. For KNN ceramics, the results reveal that the values for remanent polarization as well as for most of the coercive field are quite similar among all compositions. These facts evidenced that Cu2+ may be incorporated into the A and/or B sites of the perovskite structure, having both hardening and softening effects.Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP, BrazilUniv Estadual Maringa, Dept Phys, Av Colombo 5790, BR-87020900 Maringa, Parana, BrazilUniv Fed Sao Paulo, Inst Sci & Technol, 330 Talim St Vila Nair, BR-12231280 Sao Jose Dos Campos, SP, BrazilUniv Fed Sao Paulo, Inst Sci & Technol, 330 Talim St Vila Nair, BR-12231280 Sao Jose Dos Campos, SP, BrazilWeb of ScienceCNPqFapespCapesCNPq: 446565/2014-8Capes: Procad 88881.068509/2014-01Mdpi Ag2020-08-21T17:00:02Z2020-08-21T17:00:02Z2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion-application/pdfhttp://dx.doi.org/10.3390/ma9030179Materials. Basel, v. 9, n. 3, p. -, 2016.10.3390/ma9030179WOS000373805400003.pdf1996-1944https://repositorio.unifesp.br/handle/11600/57847WOS:000373805400003engMaterialsBaselinfo:eu-repo/semantics/openAccessEiras, Jose A.Gerbasi, Rosimeire B. Z.Rosso, Jaciele M.Silva, Daniel M.Cotica, Luiz F.Santos, Ivair A.Souza, Camila A. [UNIFESP]Lente, Manuel H. [UNIFESP]reponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-08-09T04:16:55Zoai:repositorio.unifesp.br/:11600/57847Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-08-09T04:16:55Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.none.fl_str_mv |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
title |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
spellingShingle |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes Eiras, Jose A. lead-free piezoelectrics ferroelectrics piezoelectrics spark plasma sintering |
title_short |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
title_full |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
title_fullStr |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
title_full_unstemmed |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
title_sort |
Compositional Design of Dielectric, Ferroelectric and Piezoelectric Properties of (K, Na)NbO3 and (Ba, Na)(Ti, Nb)O-3 Based Ceramics Prepared by Different Sintering Routes |
author |
Eiras, Jose A. |
author_facet |
Eiras, Jose A. Gerbasi, Rosimeire B. Z. Rosso, Jaciele M. Silva, Daniel M. Cotica, Luiz F. Santos, Ivair A. Souza, Camila A. [UNIFESP] Lente, Manuel H. [UNIFESP] |
author_role |
author |
author2 |
Gerbasi, Rosimeire B. Z. Rosso, Jaciele M. Silva, Daniel M. Cotica, Luiz F. Santos, Ivair A. Souza, Camila A. [UNIFESP] Lente, Manuel H. [UNIFESP] |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Eiras, Jose A. Gerbasi, Rosimeire B. Z. Rosso, Jaciele M. Silva, Daniel M. Cotica, Luiz F. Santos, Ivair A. Souza, Camila A. [UNIFESP] Lente, Manuel H. [UNIFESP] |
dc.subject.por.fl_str_mv |
lead-free piezoelectrics ferroelectrics piezoelectrics spark plasma sintering |
topic |
lead-free piezoelectrics ferroelectrics piezoelectrics spark plasma sintering |
description |
Lead free piezoelectric materials are being intensively investigated in order to substitute lead based ones, commonly used in many different applications. Among the most promising lead-free materials are those with modified NaNbO3, such as (K, Na)NbO3 (KNN) and (Ba, Na)(Ti, Nb)O-3 (BTNN) families. From a ceramic processing point of view, high density single phase KNN and BTNN ceramics are very difficult to sinter due to the volatility of the alkaline elements, the narrow sintering temperature range and the anomalous grain growth. In this work, Spark Plasma Sintering (SPS) and high-energy ball milling (HEBM), following heat treatments (calcining and sintering), in oxidative (O-2) atmosphere have been used to prepare single phase highly densified KNN (pure and Cu2+ or Li1+ doped), with theoretical densities (th) > 97% and BTNN ceramics ((th) similar to 90%), respectively. Using BTTN ceramics with a P4mm perovskite-like structure, we showed that by increasing the NaNbO3 content, the ferroelectric properties change from having a relaxor effect to an almost normal ferroelectric character, while the tetragonality and grain size increase and the shear piezoelectric coefficients (k(15), g(15) and d(15)) improve. For KNN ceramics, the results reveal that the values for remanent polarization as well as for most of the coercive field are quite similar among all compositions. These facts evidenced that Cu2+ may be incorporated into the A and/or B sites of the perovskite structure, having both hardening and softening effects. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2020-08-21T17:00:02Z 2020-08-21T17:00:02Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3390/ma9030179 Materials. Basel, v. 9, n. 3, p. -, 2016. 10.3390/ma9030179 WOS000373805400003.pdf 1996-1944 https://repositorio.unifesp.br/handle/11600/57847 WOS:000373805400003 |
url |
http://dx.doi.org/10.3390/ma9030179 https://repositorio.unifesp.br/handle/11600/57847 |
identifier_str_mv |
Materials. Basel, v. 9, n. 3, p. -, 2016. 10.3390/ma9030179 WOS000373805400003.pdf 1996-1944 WOS:000373805400003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
- application/pdf |
dc.coverage.none.fl_str_mv |
Basel |
dc.publisher.none.fl_str_mv |
Mdpi Ag |
publisher.none.fl_str_mv |
Mdpi Ag |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
biblioteca.csp@unifesp.br |
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1814268431477768192 |