Growth of BaxSr1-xSO4 nano-steps on barite (001) face

Crystal growth has been promoted in the fluid cell of an Atomic Force Microscope (AFM) by passing Ba–Sr–SO4 aqueous solutions over barite (001) cleavage surfaces. Steps advance in structural continuity with the original barite (001) surfaces and two-dimensional nucleation occurs preferentially on th...

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Detalhes bibliográficos
Autores: YuHang, Chen, Asenjo Barahona, Agustina, Sánchez Pastor, Nuria, Fernández Díaz, María Lourdes, Gómez Herrero, Julio, Pina Martínez, Carlos Manuel
Tipo de documento: artigo
Data de publicação:2007
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/49783
Acesso em linha:https://hdl.handle.net/20.500.14352/49783
Access Level:Acceso aberto
Palavra-chave:548.5
Atomic force microscopy
Barite
Celestite
Solid solution
Crystal growth
Cristalografía (Geología)
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network_acronym_str ES
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repository_id_str
spelling Growth of BaxSr1-xSO4 nano-steps on barite (001) faceYuHang, ChenAsenjo Barahona, AgustinaSánchez Pastor, NuriaFernández Díaz, María LourdesGómez Herrero, JulioPina Martínez, Carlos Manuel548.5Atomic force microscopyBariteCelestiteSolid solutionCrystal growthCristalografía (Geología)Crystal growth has been promoted in the fluid cell of an Atomic Force Microscope (AFM) by passing Ba–Sr–SO4 aqueous solutions over barite (001) cleavage surfaces. Steps advance in structural continuity with the original barite (001) surfaces and two-dimensional nucleation occurs preferentially on the newly-formed terraces. The terraces are, on average, 7.5% lower than pure barite terraces. Since the ionic radius of Sr2+ is smaller that the ionic radius of Ba2+, the reduction of terrace height is consistent with an extensive incorporation of Sr2+ into the barite structure. Therefore, it can be considered that the newly-formed terraces have compositions corresponding to terms of the BaxSr1xSO4 solid solution. A non-linear dependence of step rate on [SrSO4] concentration in the solution (and therefore on supersaturation) has been found. The growth behaviour has been discussed by considering both the physicochemical properties of the BaxSr1xSO4 solid solution–aqueous solution (SS–AS) system and a kinetic-based step growth model.ElsevierUniversidad Complutense de Madrid20072007-01-0120072007-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/49783reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/497832026-06-02T12:44:21Z
dc.title.none.fl_str_mv Growth of BaxSr1-xSO4 nano-steps on barite (001) face
title Growth of BaxSr1-xSO4 nano-steps on barite (001) face
spellingShingle Growth of BaxSr1-xSO4 nano-steps on barite (001) face
YuHang, Chen
548.5
Atomic force microscopy
Barite
Celestite
Solid solution
Crystal growth
Cristalografía (Geología)
title_short Growth of BaxSr1-xSO4 nano-steps on barite (001) face
title_full Growth of BaxSr1-xSO4 nano-steps on barite (001) face
title_fullStr Growth of BaxSr1-xSO4 nano-steps on barite (001) face
title_full_unstemmed Growth of BaxSr1-xSO4 nano-steps on barite (001) face
title_sort Growth of BaxSr1-xSO4 nano-steps on barite (001) face
dc.creator.none.fl_str_mv YuHang, Chen
Asenjo Barahona, Agustina
Sánchez Pastor, Nuria
Fernández Díaz, María Lourdes
Gómez Herrero, Julio
Pina Martínez, Carlos Manuel
author YuHang, Chen
author_facet YuHang, Chen
Asenjo Barahona, Agustina
Sánchez Pastor, Nuria
Fernández Díaz, María Lourdes
Gómez Herrero, Julio
Pina Martínez, Carlos Manuel
author_role author
author2 Asenjo Barahona, Agustina
Sánchez Pastor, Nuria
Fernández Díaz, María Lourdes
Gómez Herrero, Julio
Pina Martínez, Carlos Manuel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 548.5
Atomic force microscopy
Barite
Celestite
Solid solution
Crystal growth
Cristalografía (Geología)
topic 548.5
Atomic force microscopy
Barite
Celestite
Solid solution
Crystal growth
Cristalografía (Geología)
description Crystal growth has been promoted in the fluid cell of an Atomic Force Microscope (AFM) by passing Ba–Sr–SO4 aqueous solutions over barite (001) cleavage surfaces. Steps advance in structural continuity with the original barite (001) surfaces and two-dimensional nucleation occurs preferentially on the newly-formed terraces. The terraces are, on average, 7.5% lower than pure barite terraces. Since the ionic radius of Sr2+ is smaller that the ionic radius of Ba2+, the reduction of terrace height is consistent with an extensive incorporation of Sr2+ into the barite structure. Therefore, it can be considered that the newly-formed terraces have compositions corresponding to terms of the BaxSr1xSO4 solid solution. A non-linear dependence of step rate on [SrSO4] concentration in the solution (and therefore on supersaturation) has been found. The growth behaviour has been discussed by considering both the physicochemical properties of the BaxSr1xSO4 solid solution–aqueous solution (SS–AS) system and a kinetic-based step growth model.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01
2007
2007-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/49783
url https://hdl.handle.net/20.500.14352/49783
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
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:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415605942091776
score 15,300724

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