THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS
The regularities of impact heterovalent substitutions of atoms A- and B-positions on the slab perovskite-like structure of An+1BnO3n+1 type compounds were determined based on the analysis of structure Sr2-xLnxBIV1-xBIIIxO4 and Sr3-xLnxBIV2-xBIIIxO7 (Ln = La, Pr, Nd, Sm, BIII = In, Sc, BIV = Ti, Sn)...
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| Дата: | 2024 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
V.I.Vernadsky Institute of General and Inorganic Chemistry
2024
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| Онлайн доступ: | https://ucj.org.ua/index.php/journal/article/view/698 |
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| Назва журналу: | Ukrainian Chemistry Journal |
Репозитарії
Ukrainian Chemistry Journal| _version_ | 1856543839826739200 |
|---|---|
| author | Slobodyanik, Mykola Titov, Yuri |
| author_facet | Slobodyanik, Mykola Titov, Yuri |
| author_sort | Slobodyanik, Mykola |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2025-04-08T13:54:13Z |
| description | The regularities of impact heterovalent substitutions of atoms A- and B-positions on the slab perovskite-like structure of An+1BnO3n+1 type compounds were determined based on the analysis of structure Sr2-xLnxBIV1-xBIIIxO4 and Sr3-xLnxBIV2-xBIIIxO7 (Ln = La, Pr, Nd, Sm, BIII = In, Sc, BIV = Ti, Sn) types ompounds and phases. It was established that the inclusion of REE and indium atoms in the single- and double-slab structures of compounds Srn+1BIVnO3n+1 leads to increase the degree of interblockpolyhedra AO9 and octahedra BO6 deformation and a decrease the distance between adjacent perovskite-like blocks. Increase the degree of deformation of AO9interblockpolyhedra leads to increase in the tension in the interblock slab of Sr2-xLnxBIV1-xInxO4 and Sr3-xLnxBIV2-xInxO7 slab perovskite-like structure and the reduction of the distance between the two-dimensional perovskite-like blocks brings the structure of their two-dimensional slab perovskite-like structure closer to the structure of thermodynamically much more stable three-dimensional structures. The simultaneous combined action of these factors gradually destabilizes the slab perovskite-like structure and limits the region of its existence in the Sr2-xLnxBIV1-xInxO4 and Sr3-xLnxBIV2-xInxO7 series (in particular, it explains the absence of SrNdInO4 and SrLn2In2O7 (Ln = La – Sm) with slab perovskite-like structure). The significant influence of heterovalent substitution of atoms in slab perovskite-like structure of An+1BnO3n+1 type compounds on the structure of newly formed phases provides grounds for using this type of substitution for further targeted regulation of structure-sensitive properties of materials based on An+1BnO3n+1 type compounds with slab perovskite-like structure. |
| first_indexed | 2025-09-24T17:43:59Z |
| format | Article |
| id | oai:ojs2.1444248.nisspano.web.hosting-test.net:article-698 |
| institution | Ukrainian Chemistry Journal |
| language | English |
| last_indexed | 2025-09-24T17:43:59Z |
| publishDate | 2024 |
| publisher | V.I.Vernadsky Institute of General and Inorganic Chemistry |
| record_format | ojs |
| spelling | oai:ojs2.1444248.nisspano.web.hosting-test.net:article-6982025-04-08T13:54:13Z THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS Slobodyanik, Mykola Titov, Yuri compounds of An 1BnO3n 1 type, slab perovskite-like structure, isomorphism, heterovalent substitution. The regularities of impact heterovalent substitutions of atoms A- and B-positions on the slab perovskite-like structure of An+1BnO3n+1 type compounds were determined based on the analysis of structure Sr2-xLnxBIV1-xBIIIxO4 and Sr3-xLnxBIV2-xBIIIxO7 (Ln = La, Pr, Nd, Sm, BIII = In, Sc, BIV = Ti, Sn) types ompounds and phases. It was established that the inclusion of REE and indium atoms in the single- and double-slab structures of compounds Srn+1BIVnO3n+1 leads to increase the degree of interblockpolyhedra AO9 and octahedra BO6 deformation and a decrease the distance between adjacent perovskite-like blocks. Increase the degree of deformation of AO9interblockpolyhedra leads to increase in the tension in the interblock slab of Sr2-xLnxBIV1-xInxO4 and Sr3-xLnxBIV2-xInxO7 slab perovskite-like structure and the reduction of the distance between the two-dimensional perovskite-like blocks brings the structure of their two-dimensional slab perovskite-like structure closer to the structure of thermodynamically much more stable three-dimensional structures. The simultaneous combined action of these factors gradually destabilizes the slab perovskite-like structure and limits the region of its existence in the Sr2-xLnxBIV1-xInxO4 and Sr3-xLnxBIV2-xInxO7 series (in particular, it explains the absence of SrNdInO4 and SrLn2In2O7 (Ln = La – Sm) with slab perovskite-like structure). The significant influence of heterovalent substitution of atoms in slab perovskite-like structure of An+1BnO3n+1 type compounds on the structure of newly formed phases provides grounds for using this type of substitution for further targeted regulation of structure-sensitive properties of materials based on An+1BnO3n+1 type compounds with slab perovskite-like structure. V.I.Vernadsky Institute of General and Inorganic Chemistry 2024-12-27 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/698 10.33609/2708-129X.90.11.2024.17-24 Ukrainian Chemistry Journal; Vol. 90 No. 11 (2024): Ukrainian Chemistry Journal; 17-24 Украинский химический журнал; Том 90 № 11 (2024): Ukrainian Chemistry Journal; 17-24 Український хімічний журнал; Том 90 № 11 (2024): Ukrainian Chemistry Journal; 17-24 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/698/348 |
| spellingShingle | Slobodyanik, Mykola Titov, Yuri THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title | THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title_full | THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title_fullStr | THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title_full_unstemmed | THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title_short | THE IMPACT OF ATOMS HETEROVALENT SUBSTITUTION ON THE STRUCTURE OF An+1BnO3n+1 TYPE COMPOUNDS |
| title_sort | impact of atoms heterovalent substitution on the structure of an+1bno3n+1 type compounds |
| topic_facet | compounds of An 1BnO3n 1 type slab perovskite-like structure isomorphism heterovalent substitution. |
| url | https://ucj.org.ua/index.php/journal/article/view/698 |
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