Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2298/PAC1903219F http://hdl.handle.net/11449/201243 |
Resumo: | The origin of abnormal ferroelectric and unusual piezoelectricity in the polycrystalline CaCu3Ti4O12 (CCTO) thin films deposited by RF-sputtering on Pt/Ti/SiO2/Si (100) substrates was explored. The CCTO thin films, deposited at room temperature followed by annealing at 600 °C for 2 h in a conventional furnace, have a cubic structure with lattice parameter a = 7.379 ± 0.001 Å and without any secondary phases. No polarization loss up to 1010 switching cycles, with a switched polarization ∆P of 30 µC/cm2 measured at 400 kV/cm was evidenced. The piezoelectric coefficient investigated by piezoresponse force microscopy (PFM) was approximately 9.0 pm/V. This may be the very first example of exploring the origin of ferroelectric behaviour for a material that possesses space charge polarization with highly resistive grain boundaries in the polycrystalline state. |
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Repositório Institucional da UNESP |
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Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputteringCalcium copper titanateCCTOFerroelectricityRF-sputteringThin filmsThe origin of abnormal ferroelectric and unusual piezoelectricity in the polycrystalline CaCu3Ti4O12 (CCTO) thin films deposited by RF-sputtering on Pt/Ti/SiO2/Si (100) substrates was explored. The CCTO thin films, deposited at room temperature followed by annealing at 600 °C for 2 h in a conventional furnace, have a cubic structure with lattice parameter a = 7.379 ± 0.001 Å and without any secondary phases. No polarization loss up to 1010 switching cycles, with a switched polarization ∆P of 30 µC/cm2 measured at 400 kV/cm was evidenced. The piezoelectric coefficient investigated by piezoresponse force microscopy (PFM) was approximately 9.0 pm/V. This may be the very first example of exploring the origin of ferroelectric behaviour for a material that possesses space charge polarization with highly resistive grain boundaries in the polycrystalline state.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University (UNESP) School of Engineering of Bauru, Av. Eng. Luiz Edmundo C. Coube 14-01São Paulo State University (UNESP) School of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333São Paulo State University (UNESP) – Chemistry Institute, R. Prof. Francisco Degni 55São Paulo State University (UNESP) School of Engineering of Bauru, Av. Eng. Luiz Edmundo C. Coube 14-01São Paulo State University (UNESP) School of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333São Paulo State University (UNESP) – Chemistry Institute, R. Prof. Francisco Degni 55FAPESP: 2013/07296-2Universidade Estadual Paulista (Unesp)Foschini, Cesar R. [UNESP]Hangai, Bruno [UNESP]Ortega, Pedro Paulo [UNESP]Longo, Elson [UNESP]Cilense, Mário [UNESP]Simões, Alexandre Z. [UNESP]2020-12-12T02:27:40Z2020-12-12T02:27:40Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article219-228http://dx.doi.org/10.2298/PAC1903219FProcessing and Application of Ceramics, v. 13, n. 3, p. 219-228, 2019.2406-10341820-6131http://hdl.handle.net/11449/20124310.2298/PAC1903219F2-s2.0-8507361258419223571848427670000-0003-1300-4978Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProcessing and Application of Ceramicsinfo:eu-repo/semantics/openAccess2021-10-22T13:22:09Zoai:repositorio.unesp.br:11449/201243Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T13:22:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
title |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
spellingShingle |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering Foschini, Cesar R. [UNESP] Calcium copper titanate CCTO Ferroelectricity RF-sputtering Thin films |
title_short |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
title_full |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
title_fullStr |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
title_full_unstemmed |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
title_sort |
Evidence of ferroelectric behaviour in CaCu3Ti4O12 thin films deposited by RF-sputtering |
author |
Foschini, Cesar R. [UNESP] |
author_facet |
Foschini, Cesar R. [UNESP] Hangai, Bruno [UNESP] Ortega, Pedro Paulo [UNESP] Longo, Elson [UNESP] Cilense, Mário [UNESP] Simões, Alexandre Z. [UNESP] |
author_role |
author |
author2 |
Hangai, Bruno [UNESP] Ortega, Pedro Paulo [UNESP] Longo, Elson [UNESP] Cilense, Mário [UNESP] Simões, Alexandre Z. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Foschini, Cesar R. [UNESP] Hangai, Bruno [UNESP] Ortega, Pedro Paulo [UNESP] Longo, Elson [UNESP] Cilense, Mário [UNESP] Simões, Alexandre Z. [UNESP] |
dc.subject.por.fl_str_mv |
Calcium copper titanate CCTO Ferroelectricity RF-sputtering Thin films |
topic |
Calcium copper titanate CCTO Ferroelectricity RF-sputtering Thin films |
description |
The origin of abnormal ferroelectric and unusual piezoelectricity in the polycrystalline CaCu3Ti4O12 (CCTO) thin films deposited by RF-sputtering on Pt/Ti/SiO2/Si (100) substrates was explored. The CCTO thin films, deposited at room temperature followed by annealing at 600 °C for 2 h in a conventional furnace, have a cubic structure with lattice parameter a = 7.379 ± 0.001 Å and without any secondary phases. No polarization loss up to 1010 switching cycles, with a switched polarization ∆P of 30 µC/cm2 measured at 400 kV/cm was evidenced. The piezoelectric coefficient investigated by piezoresponse force microscopy (PFM) was approximately 9.0 pm/V. This may be the very first example of exploring the origin of ferroelectric behaviour for a material that possesses space charge polarization with highly resistive grain boundaries in the polycrystalline state. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T02:27:40Z 2020-12-12T02:27:40Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2298/PAC1903219F Processing and Application of Ceramics, v. 13, n. 3, p. 219-228, 2019. 2406-1034 1820-6131 http://hdl.handle.net/11449/201243 10.2298/PAC1903219F 2-s2.0-85073612584 1922357184842767 0000-0003-1300-4978 |
url |
http://dx.doi.org/10.2298/PAC1903219F http://hdl.handle.net/11449/201243 |
identifier_str_mv |
Processing and Application of Ceramics, v. 13, n. 3, p. 219-228, 2019. 2406-1034 1820-6131 10.2298/PAC1903219F 2-s2.0-85073612584 1922357184842767 0000-0003-1300-4978 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Processing and Application of Ceramics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
219-228 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965049605849088 |