Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites
The phase transition to perovskite-type structure, that occurs in some hexagonal manganites when foreign cations are incorporated into solid solution, has been studied. Several solid solution series belonging to the Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3, systems have been prepared by solid state re...
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| Format: | Article |
| Language: | English |
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Elsevier
1999-10-01
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| Series: | Boletín de la Sociedad Española de Cerámica y Vidrio |
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| Online Access: | http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/922/953 |
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| author | Moure, C. Gutiérrez, D. Fernández, J. F. Tartaj, J. Durán, P. Pena, O. |
| author_facet | Moure, C. Gutiérrez, D. Fernández, J. F. Tartaj, J. Durán, P. Pena, O. |
| author_sort | Moure, C. |
| collection | DOAJ |
| description | The phase transition to perovskite-type structure, that occurs in some hexagonal manganites when foreign cations are incorporated into solid solution, has been studied. Several solid solution series belonging to the Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3, systems have been prepared by solid state reaction between the corresponding oxides. The crystalline structure of the different solid solutions has been established. The behaviour of the (Gd, Ca)MnO3 system has been taken as a reference. The obtained results are discussed as a function of the tolerance factor and the Mn3+/Mn4+ ratio. The transition to perovskite structure is governed by this Mn3+/Mn4+ ratio rather than the increase of the tolerance factor.<br><br>Se ha estudiado la transición de fase a estructura de tipo perovskita que ocurre en algunas manganitas hexagonales cuando se incorporan iones aliovalentes formando soluciones sólidas. Se han preparado soluciones sólidas pertenecientes a los sistemas Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3 por reacción en estado sólido entre los óxidos. Se ha determinado la estructura cristalina de los diferentes compuestos, y los resultados se comparan con los observados en los correspondientes al sistema (Gd, Ca)MnO3. Los resultados se discuten en función del factor de tolerancia y de la razón Mn3+/Mn4+. La transición es gobernada por dicha razón más bien que por la variación del factor de tolerancia. |
| first_indexed | 2024-12-13T16:30:52Z |
| format | Article |
| id | doaj.art-128b9cb8bc2d4a529350c0020042f588 |
| institution | Directory Open Access Journal |
| issn | 0366-3175 |
| language | English |
| last_indexed | 2024-12-13T16:30:52Z |
| publishDate | 1999-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Boletín de la Sociedad Española de Cerámica y Vidrio |
| spelling | doaj.art-128b9cb8bc2d4a529350c0020042f5882022-12-21T23:38:30ZengElsevierBoletín de la Sociedad Española de Cerámica y Vidrio0366-31751999-10-01385417420Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sitesMoure, C.Gutiérrez, D.Fernández, J. F.Tartaj, J.Durán, P.Pena, O.The phase transition to perovskite-type structure, that occurs in some hexagonal manganites when foreign cations are incorporated into solid solution, has been studied. Several solid solution series belonging to the Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3, systems have been prepared by solid state reaction between the corresponding oxides. The crystalline structure of the different solid solutions has been established. The behaviour of the (Gd, Ca)MnO3 system has been taken as a reference. The obtained results are discussed as a function of the tolerance factor and the Mn3+/Mn4+ ratio. The transition to perovskite structure is governed by this Mn3+/Mn4+ ratio rather than the increase of the tolerance factor.<br><br>Se ha estudiado la transición de fase a estructura de tipo perovskita que ocurre en algunas manganitas hexagonales cuando se incorporan iones aliovalentes formando soluciones sólidas. Se han preparado soluciones sólidas pertenecientes a los sistemas Y(Mn, Ni)O3, (Er, Ca)MnO3, (Y, Ca)MnO3 por reacción en estado sólido entre los óxidos. Se ha determinado la estructura cristalina de los diferentes compuestos, y los resultados se comparan con los observados en los correspondientes al sistema (Gd, Ca)MnO3. Los resultados se discuten en función del factor de tolerancia y de la razón Mn3+/Mn4+. La transición es gobernada por dicha razón más bien que por la variación del factor de tolerancia.http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/922/953Lanthanide manganitessolid solutionsphase transitionsManganitas de tierras rarassoluciones sólidastransiciones de fase |
| spellingShingle | Moure, C. Gutiérrez, D. Fernández, J. F. Tartaj, J. Durán, P. Pena, O. Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites Boletín de la Sociedad Española de Cerámica y Vidrio Lanthanide manganites solid solutions phase transitions Manganitas de tierras raras soluciones sólidas transiciones de fase |
| title | Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites |
| title_full | Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites |
| title_fullStr | Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites |
| title_full_unstemmed | Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites |
| title_short | Phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on A or B lattice sites |
| title_sort | phase transitions induced on hexagonal manganites by the incorporation of aliovalent cations on a or b lattice sites |
| topic | Lanthanide manganites solid solutions phase transitions Manganitas de tierras raras soluciones sólidas transiciones de fase |
| url | http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/922/953 |
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