Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure

Autores
Pomiro, Fernando; Lohr, Javier Hernán; Pannunzio Miner, Elisa Victoria; Nassif, Vivian; Sanchez, Rodolfo Daniel; Carbonio, Raul Ernesto
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
RCrMnO5 (R = Sm, Eu, Gd, Tb, Ho, and Er) were synthesized at high O2 pressures and 900–950 °C. Crystal structures were refined by using powder X‐ray diffraction (PXRD) and powder neutron diffraction (PND) for Tb, Ho, and Er compounds and PXRD for Sm, Eu and Gd compounds. All compounds were isostructural with RMn2O5. By using the bond‐valence model we found that (Cr/Mn)4+ mainly occupy the octahedral sites and (Cr/Mn)3+ occupy the pyramidal sites. Antisite disorder between octahedral and pyramidal sites was found in the three samples analyzed by PND. From the values obtained for the occupancies of Cr and Mn in the pyramidal and octahedral sites and from the approximate average oxidation states for each crystallographic site obtained by the bond‐valence calculations, an estimated ionic distribution model was proposed. The μeff value for RCrMnO5 could be explained by considering the contribution of all the paramagnetic species and by using the ionic distribution model. No magnetic long‐range order was observed by PND in R = Er, Ho, and Tb compounds. All the Curie–Weiss temperatures obtained from the magnetic susceptibility were negative (θ < 0), indicating antiferromagnetic correlations. For the compounds with Eu and Sm, θ close to –200 K were obtained for the Cr–Mn sublattice. The semiconducting properties could be described by a variable range hopping mechanism associated with antisite disorder of Cr/Mn. No dielectric transitions were observed in the electric permittivity in the measured temperature range.
Fil: Pomiro, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Lohr, Javier Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Pannunzio Miner, Elisa Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Nassif, Vivian. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Sanchez, Rodolfo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Carbonio, Raul Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
Rare Earths
Crystal Engineering
High-Pressure Chemistry
Magnetic Properties
Semiconductors
Dielectric Permittivity
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acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
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oai:ri.conicet.gov.ar:11336/46054
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oai_identifier_str oai:ri.conicet.gov.ar:11336/46054
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen PressurePomiro, FernandoLohr, Javier HernánPannunzio Miner, Elisa VictoriaNassif, VivianSanchez, Rodolfo DanielCarbonio, Raul ErnestoRare EarthsCrystal EngineeringHigh-Pressure ChemistryMagnetic PropertiesSemiconductorsDielectric Permittivityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1RCrMnO5 (R = Sm, Eu, Gd, Tb, Ho, and Er) were synthesized at high O2 pressures and 900–950 °C. Crystal structures were refined by using powder X‐ray diffraction (PXRD) and powder neutron diffraction (PND) for Tb, Ho, and Er compounds and PXRD for Sm, Eu and Gd compounds. All compounds were isostructural with RMn2O5. By using the bond‐valence model we found that (Cr/Mn)4+ mainly occupy the octahedral sites and (Cr/Mn)3+ occupy the pyramidal sites. Antisite disorder between octahedral and pyramidal sites was found in the three samples analyzed by PND. From the values obtained for the occupancies of Cr and Mn in the pyramidal and octahedral sites and from the approximate average oxidation states for each crystallographic site obtained by the bond‐valence calculations, an estimated ionic distribution model was proposed. The μeff value for RCrMnO5 could be explained by considering the contribution of all the paramagnetic species and by using the ionic distribution model. No magnetic long‐range order was observed by PND in R = Er, Ho, and Tb compounds. All the Curie–Weiss temperatures obtained from the magnetic susceptibility were negative (θ < 0), indicating antiferromagnetic correlations. For the compounds with Eu and Sm, θ close to –200 K were obtained for the Cr–Mn sublattice. The semiconducting properties could be described by a variable range hopping mechanism associated with antisite disorder of Cr/Mn. No dielectric transitions were observed in the electric permittivity in the measured temperature range.Fil: Pomiro, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Lohr, Javier Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Pannunzio Miner, Elisa Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Nassif, Vivian. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Sanchez, Rodolfo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Carbonio, Raul Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaWiley VCH Verlag2015-09-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/46054Pomiro, Fernando; Lohr, Javier Hernán; Pannunzio Miner, Elisa Victoria; Nassif, Vivian; Sanchez, Rodolfo Daniel; et al.; Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2015; 28; 2-9-2015; 4737-47491434-1948CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.201500662info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.201500662info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:58Zoai:ri.conicet.gov.ar:11336/46054instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:44:59.019CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
title Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
spellingShingle Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
Pomiro, Fernando
Rare Earths
Crystal Engineering
High-Pressure Chemistry
Magnetic Properties
Semiconductors
Dielectric Permittivity
title_short Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
title_full Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
title_fullStr Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
title_full_unstemmed Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
title_sort Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure
dc.creator.none.fl_str_mv Pomiro, Fernando
Lohr, Javier Hernán
Pannunzio Miner, Elisa Victoria
Nassif, Vivian
Sanchez, Rodolfo Daniel
Carbonio, Raul Ernesto
author Pomiro, Fernando
author_facet Pomiro, Fernando
Lohr, Javier Hernán
Pannunzio Miner, Elisa Victoria
Nassif, Vivian
Sanchez, Rodolfo Daniel
Carbonio, Raul Ernesto
author_role author
author2 Lohr, Javier Hernán
Pannunzio Miner, Elisa Victoria
Nassif, Vivian
Sanchez, Rodolfo Daniel
Carbonio, Raul Ernesto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Rare Earths
Crystal Engineering
High-Pressure Chemistry
Magnetic Properties
Semiconductors
Dielectric Permittivity
topic Rare Earths
Crystal Engineering
High-Pressure Chemistry
Magnetic Properties
Semiconductors
Dielectric Permittivity
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv RCrMnO5 (R = Sm, Eu, Gd, Tb, Ho, and Er) were synthesized at high O2 pressures and 900–950 °C. Crystal structures were refined by using powder X‐ray diffraction (PXRD) and powder neutron diffraction (PND) for Tb, Ho, and Er compounds and PXRD for Sm, Eu and Gd compounds. All compounds were isostructural with RMn2O5. By using the bond‐valence model we found that (Cr/Mn)4+ mainly occupy the octahedral sites and (Cr/Mn)3+ occupy the pyramidal sites. Antisite disorder between octahedral and pyramidal sites was found in the three samples analyzed by PND. From the values obtained for the occupancies of Cr and Mn in the pyramidal and octahedral sites and from the approximate average oxidation states for each crystallographic site obtained by the bond‐valence calculations, an estimated ionic distribution model was proposed. The μeff value for RCrMnO5 could be explained by considering the contribution of all the paramagnetic species and by using the ionic distribution model. No magnetic long‐range order was observed by PND in R = Er, Ho, and Tb compounds. All the Curie–Weiss temperatures obtained from the magnetic susceptibility were negative (θ < 0), indicating antiferromagnetic correlations. For the compounds with Eu and Sm, θ close to –200 K were obtained for the Cr–Mn sublattice. The semiconducting properties could be described by a variable range hopping mechanism associated with antisite disorder of Cr/Mn. No dielectric transitions were observed in the electric permittivity in the measured temperature range.
Fil: Pomiro, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Lohr, Javier Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Pannunzio Miner, Elisa Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Nassif, Vivian. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Sanchez, Rodolfo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Carbonio, Raul Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description RCrMnO5 (R = Sm, Eu, Gd, Tb, Ho, and Er) were synthesized at high O2 pressures and 900–950 °C. Crystal structures were refined by using powder X‐ray diffraction (PXRD) and powder neutron diffraction (PND) for Tb, Ho, and Er compounds and PXRD for Sm, Eu and Gd compounds. All compounds were isostructural with RMn2O5. By using the bond‐valence model we found that (Cr/Mn)4+ mainly occupy the octahedral sites and (Cr/Mn)3+ occupy the pyramidal sites. Antisite disorder between octahedral and pyramidal sites was found in the three samples analyzed by PND. From the values obtained for the occupancies of Cr and Mn in the pyramidal and octahedral sites and from the approximate average oxidation states for each crystallographic site obtained by the bond‐valence calculations, an estimated ionic distribution model was proposed. The μeff value for RCrMnO5 could be explained by considering the contribution of all the paramagnetic species and by using the ionic distribution model. No magnetic long‐range order was observed by PND in R = Er, Ho, and Tb compounds. All the Curie–Weiss temperatures obtained from the magnetic susceptibility were negative (θ < 0), indicating antiferromagnetic correlations. For the compounds with Eu and Sm, θ close to –200 K were obtained for the Cr–Mn sublattice. The semiconducting properties could be described by a variable range hopping mechanism associated with antisite disorder of Cr/Mn. No dielectric transitions were observed in the electric permittivity in the measured temperature range.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/46054
Pomiro, Fernando; Lohr, Javier Hernán; Pannunzio Miner, Elisa Victoria; Nassif, Vivian; Sanchez, Rodolfo Daniel; et al.; Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2015; 28; 2-9-2015; 4737-4749
1434-1948
CONICET Digital
CONICET
url http://hdl.handle.net/11336/46054
identifier_str_mv Pomiro, Fernando; Lohr, Javier Hernán; Pannunzio Miner, Elisa Victoria; Nassif, Vivian; Sanchez, Rodolfo Daniel; et al.; Crystal Structure, Magnetic and Electrical Properties of Compounds in the RCrMnO5 Family (R = Sm, Eu, Gd, Tb, Ho and Er) Synthesized Under High Oxygen Pressure; Wiley VCH Verlag; European Journal of Inorganic Chemistry; 2015; 28; 2-9-2015; 4737-4749
1434-1948
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/ejic.201500662
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.201500662
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
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dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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