Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/40251 |
Resumo: | Manganites present fascinating physical properties which can be tuned according with the method and processing conditions. In this work, Ca1-xPrxMnO3 (x = 0.03, 0.06, 0.1) materials were prepared by the Laser Floating Zone technique (LFZ), under different pulling rates (25 to 100 mm/h) in air and argon atmospheres, obtaining fibres with 2.5 mm diameter. Such processing conditions promote the formation of secondary phases in (Ca,Pr)MnO3 fibres. The formation of the perovskite phase at slow pulling rates was observed. The effects of the LFZ conditions on the phase composition, microstructural features, electric and magnetic properties of as-grown and thermally post-processed fibres are analysed and discussed. The results indicate that the LFZ processing conditions have a great impact on the electrical and magnetic properties of the prepared manganites. Secondary phases increase with pulling rate and the effects imposed by their formation can be minimized by additional heat treatment at high temperatures, improving the electric conductivity and magnetization of the heattreated fibres. |
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Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 systemLaser floating zone processingElectroceramicsCalcium manganitePr donorsubstitutedPerovskiteMagnetizationElectrical conductivityManganites present fascinating physical properties which can be tuned according with the method and processing conditions. In this work, Ca1-xPrxMnO3 (x = 0.03, 0.06, 0.1) materials were prepared by the Laser Floating Zone technique (LFZ), under different pulling rates (25 to 100 mm/h) in air and argon atmospheres, obtaining fibres with 2.5 mm diameter. Such processing conditions promote the formation of secondary phases in (Ca,Pr)MnO3 fibres. The formation of the perovskite phase at slow pulling rates was observed. The effects of the LFZ conditions on the phase composition, microstructural features, electric and magnetic properties of as-grown and thermally post-processed fibres are analysed and discussed. The results indicate that the LFZ processing conditions have a great impact on the electrical and magnetic properties of the prepared manganites. Secondary phases increase with pulling rate and the effects imposed by their formation can be minimized by additional heat treatment at high temperatures, improving the electric conductivity and magnetization of the heattreated fibres.Elsevier2025-06-01T00:00:00Z2023-06-01T00:00:00Z2023-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/40251eng0304-885310.1016/j.jmmm.2023.170750Ferreira, N. M.Carreira, F.Kovalevsky, A. V.Costa, F. M.Valente, M. A.info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:18:50Zoai:ria.ua.pt:10773/40251Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:10:20.101359Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
title |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
spellingShingle |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system Ferreira, N. M. Laser floating zone processing Electroceramics Calcium manganite Pr donorsubstituted Perovskite Magnetization Electrical conductivity |
title_short |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
title_full |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
title_fullStr |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
title_full_unstemmed |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
title_sort |
Effects of laser floating zone processing on electrical and magnetic properties of (Ca,Pr)MnO3 system |
author |
Ferreira, N. M. |
author_facet |
Ferreira, N. M. Carreira, F. Kovalevsky, A. V. Costa, F. M. Valente, M. A. |
author_role |
author |
author2 |
Carreira, F. Kovalevsky, A. V. Costa, F. M. Valente, M. A. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ferreira, N. M. Carreira, F. Kovalevsky, A. V. Costa, F. M. Valente, M. A. |
dc.subject.por.fl_str_mv |
Laser floating zone processing Electroceramics Calcium manganite Pr donorsubstituted Perovskite Magnetization Electrical conductivity |
topic |
Laser floating zone processing Electroceramics Calcium manganite Pr donorsubstituted Perovskite Magnetization Electrical conductivity |
description |
Manganites present fascinating physical properties which can be tuned according with the method and processing conditions. In this work, Ca1-xPrxMnO3 (x = 0.03, 0.06, 0.1) materials were prepared by the Laser Floating Zone technique (LFZ), under different pulling rates (25 to 100 mm/h) in air and argon atmospheres, obtaining fibres with 2.5 mm diameter. Such processing conditions promote the formation of secondary phases in (Ca,Pr)MnO3 fibres. The formation of the perovskite phase at slow pulling rates was observed. The effects of the LFZ conditions on the phase composition, microstructural features, electric and magnetic properties of as-grown and thermally post-processed fibres are analysed and discussed. The results indicate that the LFZ processing conditions have a great impact on the electrical and magnetic properties of the prepared manganites. Secondary phases increase with pulling rate and the effects imposed by their formation can be minimized by additional heat treatment at high temperatures, improving the electric conductivity and magnetization of the heattreated fibres. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-06-01T00:00:00Z 2023-06-01 2025-06-01T00:00:00Z |
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://hdl.handle.net/10773/40251 |
url |
http://hdl.handle.net/10773/40251 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0304-8853 10.1016/j.jmmm.2023.170750 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137753734053888 |