Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment
Ano de defesa: | 2023 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Física
|
Departamento: |
Física
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/30357 |
Resumo: | The synthesis, crystallographic structure as well the magnetic properties, of the families of double perovskites LaMF e2O6 (M = Bi, Y b), LA2BB′O6 (B = F e, Al- B′ = N i, Co) and the material La0.67Sr0.33MnO3 were studied. The investigated samples were synthesized by the modified Pechini method, the crystalline structure and the lattice parameters were refined by applying the Rietveld method. The greatest constancy with increasing synthesis temperature in the lattice parameters and magnetic properties was found in the La0.67Sr0.33MnO3 material. A superparamagnetic response in the La0.67Sr0.33MnO3, LaBiF e2O6, LaY bF e2O6 and La2AlCoO6 materials, was determined at a synthesis temperature of 873K, which with the increase in the synthesis temperature at different scales for each material became a ferromagnetic response. The material LaY bF e2O6 belonging to the space group (62) P nma with orthorhombic structure, Until now, there are no published articles about this material. The family of perovskites La2BB′O6 (B = F e, Al- B′ = N i, Co) having a double occupancy of La2 presents very similar X-ray diffraction patterns to each other, the materials La2AlCoO6 and La2F eN iO6 crystallize in the space group R − 3C (167) and the La2CoF eO6 material crystallize in the space group P21/n (14), materials that present at low synthesis temperatures magnetic responses of paramagnetism, superparamagnetism and ferromagnetism, respectively. |
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2023-10-16T18:26:23Z2023-10-16T18:26:23Z2023-05-29http://repositorio.ufsm.br/handle/1/30357The synthesis, crystallographic structure as well the magnetic properties, of the families of double perovskites LaMF e2O6 (M = Bi, Y b), LA2BB′O6 (B = F e, Al- B′ = N i, Co) and the material La0.67Sr0.33MnO3 were studied. The investigated samples were synthesized by the modified Pechini method, the crystalline structure and the lattice parameters were refined by applying the Rietveld method. The greatest constancy with increasing synthesis temperature in the lattice parameters and magnetic properties was found in the La0.67Sr0.33MnO3 material. A superparamagnetic response in the La0.67Sr0.33MnO3, LaBiF e2O6, LaY bF e2O6 and La2AlCoO6 materials, was determined at a synthesis temperature of 873K, which with the increase in the synthesis temperature at different scales for each material became a ferromagnetic response. The material LaY bF e2O6 belonging to the space group (62) P nma with orthorhombic structure, Until now, there are no published articles about this material. The family of perovskites La2BB′O6 (B = F e, Al- B′ = N i, Co) having a double occupancy of La2 presents very similar X-ray diffraction patterns to each other, the materials La2AlCoO6 and La2F eN iO6 crystallize in the space group R − 3C (167) and the La2CoF eO6 material crystallize in the space group P21/n (14), materials that present at low synthesis temperatures magnetic responses of paramagnetism, superparamagnetism and ferromagnetism, respectively.A síntese, estrutura cristalográfica bem como as propriedades magnéticas, das famílias de perovskitas duplas LaMF e2O6 (M = Bi, Y b), LA2BB′O6 (B = F e, Al- B′ = N i, Co) e o material La0,67Sr0,33MnO3 foram estudados. As amostras investigadas foram sintetizadas pelo método Pechini modificado, a estrutura cristalina e os parâmetros de rede foram refinados pela aplicação do método Rietveld. A maior constância com o aumento da temperatura de síntese nos parâmetros de rede e propriedades magnéticas foi encontrada no material La0,67Sr0,33MnO3. Uma resposta superparamagnética nos materiais La0,67Sr0,33MnO3, LaBiF e2O6, LaY bF e2O6 e La2AlCoO6, foi determinada a uma temperatura de síntese de 873K, que com o aumento da temperatura de síntese em escalas diferentes para cada material tornaram-se uma resposta ferromagnética. O material LaY bF e2O6 pertencente ao grupo espacial (62) P nma com estrutura ortorrômbica, até o momento não há artigos publicados sobre este material. A família de perovskitas La2BB′O6 (B = F e, Al- B′ = N i, Co) com ocupação dupla de La2 apresenta padrões de difração de raios X muito semelhantes entre si, os materiais La2AlCoO6 e La2F eN iO6 cristalizam no grupo espacial R − 3C (167) e o material La2CoF eO6 cristaliza no grupo espacial P21/n (14), materiais que apresentam em baixas temperaturas de síntese respostas magnéticas de paramagnetismo , superparamagnetismo e ferromagnetismo, respectivamente.Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqporUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em FísicaUFSMBrasilFísicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessPerovskitas duplasMétodo de Pechini modificadoCristalito nanometricoDouble perovskiteModified Pechini methodNanometric crystalliteSuperparamagneticCNPQ::CIENCIAS EXATAS E DA TERRA::FISICAStructural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environmentPropriedades estruturais e magnéticas de compostos lantanídeos: influência do tamanho dos cristalitos e do ambiente magnéticoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisDorneles, Lucio Strazzaboscohttp://lattes.cnpq.br/7244173039310066Tellez, David Arsenio LandinezRojas, Jairo RoaPureur Neto, PauloDenardin, Juliano Casagrandehttp://lattes.cnpq.br/4653955442575958Palacio, Johny Andres Jaramillo100500000006600600600600600600600e5de4f50-b352-48fb-a699-ffab7b7d8f1d3638eb2e-e9a1-40ca-8eed-215d5cdb8fe7ff865a45-8381-457e-b220-0201491a2519944971e6-7b6d-4816-aac1-d3ccb5fcd64f68858ba5-1e94-4d1c-b2ad-f036e269954ecc2b979f-b3d9-48c5-8474-fb56e24b61d6reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
dc.title.alternative.por.fl_str_mv |
Propriedades estruturais e magnéticas de compostos lantanídeos: influência do tamanho dos cristalitos e do ambiente magnético |
title |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
spellingShingle |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment Palacio, Johny Andres Jaramillo Perovskitas duplas Método de Pechini modificado Cristalito nanometrico Double perovskite Modified Pechini method Nanometric crystallite Superparamagnetic CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
title_short |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
title_full |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
title_fullStr |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
title_full_unstemmed |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
title_sort |
Structural and magnetic properties of lanthanide compounds: influence of crystallite size and magnetic environment |
author |
Palacio, Johny Andres Jaramillo |
author_facet |
Palacio, Johny Andres Jaramillo |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Dorneles, Lucio Strazzabosco |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7244173039310066 |
dc.contributor.referee1.fl_str_mv |
Tellez, David Arsenio Landinez |
dc.contributor.referee2.fl_str_mv |
Rojas, Jairo Roa |
dc.contributor.referee3.fl_str_mv |
Pureur Neto, Paulo |
dc.contributor.referee4.fl_str_mv |
Denardin, Juliano Casagrande |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4653955442575958 |
dc.contributor.author.fl_str_mv |
Palacio, Johny Andres Jaramillo |
contributor_str_mv |
Dorneles, Lucio Strazzabosco Tellez, David Arsenio Landinez Rojas, Jairo Roa Pureur Neto, Paulo Denardin, Juliano Casagrande |
dc.subject.por.fl_str_mv |
Perovskitas duplas Método de Pechini modificado Cristalito nanometrico |
topic |
Perovskitas duplas Método de Pechini modificado Cristalito nanometrico Double perovskite Modified Pechini method Nanometric crystallite Superparamagnetic CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
dc.subject.eng.fl_str_mv |
Double perovskite Modified Pechini method Nanometric crystallite Superparamagnetic |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
description |
The synthesis, crystallographic structure as well the magnetic properties, of the families of double perovskites LaMF e2O6 (M = Bi, Y b), LA2BB′O6 (B = F e, Al- B′ = N i, Co) and the material La0.67Sr0.33MnO3 were studied. The investigated samples were synthesized by the modified Pechini method, the crystalline structure and the lattice parameters were refined by applying the Rietveld method. The greatest constancy with increasing synthesis temperature in the lattice parameters and magnetic properties was found in the La0.67Sr0.33MnO3 material. A superparamagnetic response in the La0.67Sr0.33MnO3, LaBiF e2O6, LaY bF e2O6 and La2AlCoO6 materials, was determined at a synthesis temperature of 873K, which with the increase in the synthesis temperature at different scales for each material became a ferromagnetic response. The material LaY bF e2O6 belonging to the space group (62) P nma with orthorhombic structure, Until now, there are no published articles about this material. The family of perovskites La2BB′O6 (B = F e, Al- B′ = N i, Co) having a double occupancy of La2 presents very similar X-ray diffraction patterns to each other, the materials La2AlCoO6 and La2F eN iO6 crystallize in the space group R − 3C (167) and the La2CoF eO6 material crystallize in the space group P21/n (14), materials that present at low synthesis temperatures magnetic responses of paramagnetism, superparamagnetism and ferromagnetism, respectively. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-10-16T18:26:23Z |
dc.date.available.fl_str_mv |
2023-10-16T18:26:23Z |
dc.date.issued.fl_str_mv |
2023-05-29 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/30357 |
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http://repositorio.ufsm.br/handle/1/30357 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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100500000006 |
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600 600 600 600 600 600 600 |
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openAccess |
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Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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Programa de Pós-Graduação em Física |
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UFSM |
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Brasil |
dc.publisher.department.fl_str_mv |
Física |
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Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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