A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites

Detalhes bibliográficos
Autor(a) principal: Kinast, Eder Julio
Data de Publicação: 2011
Outros Autores: Isnard, Olivier, Cunha, Joao Batista Marimon da, Vasconcellos, Marcos Antonio Zen, Santos, Carlos Alberto dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/89692
Resumo: A new approach is proposed to determine unambiguously the location of four cations within the crystal structure of a natural AB2O6 columbite-type compound and derivatives, when submitted to order–disorder transitions caused by heat treatments. This method is based on the successive use of electron microprobe analysis to determine the cation concentration, Mo¨ ssbauer spectroscopy to identify the Fe occupation, and a crystal structure determination of the samples combining Rietveld refinements of both neutron and X-ray diffraction. This approach is tested successfully to investigate (Fe, Mn, Nb, Ta) natural minerals as well as oxides obtained by heat treatment of the initial AB2O6 columbite-type compound.
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spelling Kinast, Eder JulioIsnard, OlivierCunha, Joao Batista Marimon daVasconcellos, Marcos Antonio ZenSantos, Carlos Alberto dos2014-03-26T01:51:01Z20110021-8898http://hdl.handle.net/10183/89692000820151A new approach is proposed to determine unambiguously the location of four cations within the crystal structure of a natural AB2O6 columbite-type compound and derivatives, when submitted to order–disorder transitions caused by heat treatments. This method is based on the successive use of electron microprobe analysis to determine the cation concentration, Mo¨ ssbauer spectroscopy to identify the Fe occupation, and a crystal structure determination of the samples combining Rietveld refinements of both neutron and X-ray diffraction. This approach is tested successfully to investigate (Fe, Mn, Nb, Ta) natural minerals as well as oxides obtained by heat treatment of the initial AB2O6 columbite-type compound.application/pdfengJournal of Applied Crystallography. Copenhagen. Vol. 44, no. 4 (Aug. 2011), p. 738-746Estrutura cristalinaTratamento térmicoDifração de nêutronsEfeito mossbauerCompostos de manganêsMineraisA new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbitesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000820151.pdf000820151.pdfTexto completo (inglês)application/pdf526028http://www.lume.ufrgs.br/bitstream/10183/89692/1/000820151.pdf996022a8fcc27bf42a8557544a722d37MD51TEXT000820151.pdf.txt000820151.pdf.txtExtracted Texttext/plain46203http://www.lume.ufrgs.br/bitstream/10183/89692/2/000820151.pdf.txt95e1ea71d824662fb4ea4982f517b037MD52THUMBNAIL000820151.pdf.jpg000820151.pdf.jpgGenerated Thumbnailimage/jpeg2020http://www.lume.ufrgs.br/bitstream/10183/89692/3/000820151.pdf.jpgfe71179a9ba86481743a16cdd230e1b4MD5310183/896922018-10-18 08:57:12.311oai:www.lume.ufrgs.br:10183/89692Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-18T11:57:12Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
title A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
spellingShingle A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
Kinast, Eder Julio
Estrutura cristalina
Tratamento térmico
Difração de nêutrons
Efeito mossbauer
Compostos de manganês
Minerais
title_short A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
title_full A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
title_fullStr A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
title_full_unstemmed A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
title_sort A new approach for the determination of multiple cation locations and ordering, using the example of natural and heat-treated columbites
author Kinast, Eder Julio
author_facet Kinast, Eder Julio
Isnard, Olivier
Cunha, Joao Batista Marimon da
Vasconcellos, Marcos Antonio Zen
Santos, Carlos Alberto dos
author_role author
author2 Isnard, Olivier
Cunha, Joao Batista Marimon da
Vasconcellos, Marcos Antonio Zen
Santos, Carlos Alberto dos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Kinast, Eder Julio
Isnard, Olivier
Cunha, Joao Batista Marimon da
Vasconcellos, Marcos Antonio Zen
Santos, Carlos Alberto dos
dc.subject.por.fl_str_mv Estrutura cristalina
Tratamento térmico
Difração de nêutrons
Efeito mossbauer
Compostos de manganês
Minerais
topic Estrutura cristalina
Tratamento térmico
Difração de nêutrons
Efeito mossbauer
Compostos de manganês
Minerais
description A new approach is proposed to determine unambiguously the location of four cations within the crystal structure of a natural AB2O6 columbite-type compound and derivatives, when submitted to order–disorder transitions caused by heat treatments. This method is based on the successive use of electron microprobe analysis to determine the cation concentration, Mo¨ ssbauer spectroscopy to identify the Fe occupation, and a crystal structure determination of the samples combining Rietveld refinements of both neutron and X-ray diffraction. This approach is tested successfully to investigate (Fe, Mn, Nb, Ta) natural minerals as well as oxides obtained by heat treatment of the initial AB2O6 columbite-type compound.
publishDate 2011
dc.date.issued.fl_str_mv 2011
dc.date.accessioned.fl_str_mv 2014-03-26T01:51:01Z
dc.type.driver.fl_str_mv Estrangeiro
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/89692
dc.identifier.issn.pt_BR.fl_str_mv 0021-8898
dc.identifier.nrb.pt_BR.fl_str_mv 000820151
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url http://hdl.handle.net/10183/89692
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Journal of Applied Crystallography. Copenhagen. Vol. 44, no. 4 (Aug. 2011), p. 738-746
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