An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6
- Autores
- Pedregosa, Jose Carmelo; Alonso, José A.; Sheptyakov, Denis; Algueró, Miguel; Muñoz, Angel; Pomjakushin, Vladimir; Pedregosa, Jose Carmelo
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The synthesis, crystal structure, and dielectric properties of the novel double perovskite Pb2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.
Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Alonso, José A.. Consejo Superior de Investigaciones Científicas; España
Fil: Sheptyakov, Denis. No especifíca;
Fil: Algueró, Miguel. Consejo Superior de Investigaciones Científicas; España
Fil: Muñoz, Angel. Universidad Carlos III de Madrid. Instituto de Salud; España
Fil: Pomjakushin, Vladimir. No especifíca;
Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina - Materia
-
Double Perovskite
Lead Lone Pair
Phase transition
Antiferroelectricity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/278576
Ver los metadatos del registro completo
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An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6Pedregosa, Jose CarmeloAlonso, José A.Sheptyakov, DenisAlgueró, MiguelMuñoz, AngelPomjakushin, VladimirPedregosa, Jose CarmeloDouble PerovskiteLead Lone PairPhase transitionAntiferroelectricityhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The synthesis, crystal structure, and dielectric properties of the novel double perovskite Pb2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Alonso, José A.. Consejo Superior de Investigaciones Científicas; EspañaFil: Sheptyakov, Denis. No especifíca;Fil: Algueró, Miguel. Consejo Superior de Investigaciones Científicas; EspañaFil: Muñoz, Angel. Universidad Carlos III de Madrid. Instituto de Salud; EspañaFil: Pomjakushin, Vladimir. No especifíca;Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaAmerican Chemical Society2010-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278576Pedregosa, Jose Carmelo; Alonso, José A.; Sheptyakov, Denis; Algueró, Miguel; Muñoz, Angel; et al.; An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6; American Chemical Society; Journal of the American Chemical Society; 132; 41; 9-2010; 14470-144800002-7863CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ja104417finfo:eu-repo/semantics/altIdentifier/doi/10.1021/ja104417finfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T10:08:44Zoai:ri.conicet.gov.ar:11336/278576instacron: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:34982026-02-26 10:08:44.473CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| title |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| spellingShingle |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 Pedregosa, Jose Carmelo Double Perovskite Lead Lone Pair Phase transition Antiferroelectricity |
| title_short |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| title_full |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| title_fullStr |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| title_full_unstemmed |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| title_sort |
An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6 |
| dc.creator.none.fl_str_mv |
Pedregosa, Jose Carmelo Alonso, José A. Sheptyakov, Denis Algueró, Miguel Muñoz, Angel Pomjakushin, Vladimir Pedregosa, Jose Carmelo |
| author |
Pedregosa, Jose Carmelo |
| author_facet |
Pedregosa, Jose Carmelo Alonso, José A. Sheptyakov, Denis Algueró, Miguel Muñoz, Angel Pomjakushin, Vladimir |
| author_role |
author |
| author2 |
Alonso, José A. Sheptyakov, Denis Algueró, Miguel Muñoz, Angel Pomjakushin, Vladimir |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Double Perovskite Lead Lone Pair Phase transition Antiferroelectricity |
| topic |
Double Perovskite Lead Lone Pair Phase transition Antiferroelectricity |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
The synthesis, crystal structure, and dielectric properties of the novel double perovskite Pb2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity. Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina Fil: Alonso, José A.. Consejo Superior de Investigaciones Científicas; España Fil: Sheptyakov, Denis. No especifíca; Fil: Algueró, Miguel. Consejo Superior de Investigaciones Científicas; España Fil: Muñoz, Angel. Universidad Carlos III de Madrid. Instituto de Salud; España Fil: Pomjakushin, Vladimir. No especifíca; Fil: Pedregosa, Jose Carmelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina |
| description |
The synthesis, crystal structure, and dielectric properties of the novel double perovskite Pb2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity.2TmSbO6 are described. The room-temperature crystal structure was determined by ab initio procedures from neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (SXRPD) data in the monoclinic C2/c (No. 15) space group. This double perovskite contains a completely ordered array of alternating TmO6 and SbO6 octahedra sharing corners, tilted in antiphase along the three pseudocubic axes, with an a-b-b- tilting scheme, which is very unusual in the crystallochemistry of perovskites. The lead atoms occupy a highly asymmetric void with 8-fold coordination due to the stereoactivity of the Pb2+ lone electron pair. This compound presents three successive phase transitions in a narrow temperature range (at T1 ) 385 K, T2 ) 444 K, and T3 ) 460 K in the heating run) as shown by differential scanning calorimetry (DSC) data. The crystal structure and temperature-dependent NPD follow the space-group sequence C2/c f P21/n f R3 j f Fm3 j m. This is a novel polymorph succession in the high-temperature evolution of perovskite-type oxides. The Tm/Sb long-range ordering is preserved across the consecutive phase transitions. Dielectric permittivity measurements indicate the presence of a paraelectric/antiferroelectric transition (associated with the last structural transition), as suggested by the negative Curie temperature obtained from the Curie-Weiss fit of the reciprocal permittivity. |
| publishDate |
2010 |
| dc.date.none.fl_str_mv |
2010-09 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/278576 Pedregosa, Jose Carmelo; Alonso, José A.; Sheptyakov, Denis; Algueró, Miguel; Muñoz, Angel; et al.; An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6; American Chemical Society; Journal of the American Chemical Society; 132; 41; 9-2010; 14470-14480 0002-7863 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/278576 |
| identifier_str_mv |
Pedregosa, Jose Carmelo; Alonso, José A.; Sheptyakov, Denis; Algueró, Miguel; Muñoz, Angel; et al.; An Original Polymorph Sequence in the High-Temperature Evolution of the Perovskite Pb 2 TmSbO 6; American Chemical Society; Journal of the American Chemical Society; 132; 41; 9-2010; 14470-14480 0002-7863 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/ja104417f info:eu-repo/semantics/altIdentifier/doi/10.1021/ja104417f |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
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American Chemical Society |
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American Chemical Society |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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