Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture
This paper presents investigations of phase transformations during the crystallization of Sr1.5La0.5FeMoO6-δ by the solid-phase technique from a stoichiometric mixture of oxides MoO3, La2O3 and Fe2O3 and SrCO3 and precursors Sr0.5La0.5FeO3 and SrMoO4. Using XRD and thermogravimetric analyses, the in...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2023-12-01
|
| Series: | Modern Electronic Materials |
| Online Access: | https://moem.pensoft.net/article/116107/download/pdf/ |
| _version_ | 1797379040956383232 |
|---|---|
| author | Marta V. Yarmolich Nikolay A. Kalanda Alexander V. Petrov Dmitry A. Kiselev Nikolay A. Bosak |
| author_facet | Marta V. Yarmolich Nikolay A. Kalanda Alexander V. Petrov Dmitry A. Kiselev Nikolay A. Bosak |
| author_sort | Marta V. Yarmolich |
| collection | DOAJ |
| description | This paper presents investigations of phase transformations during the crystallization of Sr1.5La0.5FeMoO6-δ by the solid-phase technique from a stoichiometric mixture of oxides MoO3, La2O3 and Fe2O3 and SrCO3 and precursors Sr0.5La0.5FeO3 and SrMoO4. Using XRD and thermogravimetric analyses, the influence of synthesis modes on the chemical processes occurring during the formation of double perovskite was studied. It has been established that the synthesis of lanthanum-strontium ferromolybdate in a mixture of oxides proceeds through a number of series-parallel stages. At the initial stage of interaction, the resulting lanthanum-strontium ferromolybdate is enriched with iron and its composition changes during the reaction towards an increase in the molybdenum content. As the temperature increases, the content of double perovskite increases, and the concentration of the secondary phase SrMoO4 does not disappear to zero until the synthesis temperature, which indicates that solid-phase reactions with the formation of a solid solution Sr1.5La0.5FeMoO6-δ from oxides are difficult to occur. It was determined that to minimize the influence of intermediate reaction products it is necessary to use precursors Sr0.5La0.5FeO3 and SrMoO4. Based on the results of studying the temperature dependences of the degree of phase transformations during the crystallization of double perovskite, combined heating modes were optimized. The use of optimized synthesis modes made it possible to obtain single-phase Sr1.5La0.5FeMoO6-δ powder with the superstructural ordering (82%), the Curie temperature of 450 K and a magnetization value of 40.9 A · m2 · kg-1 at T = 77 K in a magnetic field with induction B ≥ 0.86 T. |
| first_indexed | 2024-03-08T20:16:24Z |
| format | Article |
| id | doaj.art-ca6e7b9bf58e4f4fae3c3fcc28df7ea5 |
| institution | Directory Open Access Journal |
| issn | 2452-1779 |
| language | English |
| last_indexed | 2024-03-08T20:16:24Z |
| publishDate | 2023-12-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Modern Electronic Materials |
| spelling | doaj.art-ca6e7b9bf58e4f4fae3c3fcc28df7ea52023-12-22T15:29:54ZengPensoft PublishersModern Electronic Materials2452-17792023-12-019416917610.3897/j.moem.9.4.116107116107Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixtureMarta V. Yarmolich0Nikolay A. Kalanda1Alexander V. Petrov2Dmitry A. Kiselev3Nikolay A. Bosak4Scientific-Practical Materials Research Centre of the NAS of BelarusScientific-Practical Materials Research Centre of the NAS of BelarusScientific-Practical Materials Research Centre of the NAS of BelarusNational University of Science and Technology “MISIS”B.I. Stepanov Institute of Physics of the NAS of BelarusThis paper presents investigations of phase transformations during the crystallization of Sr1.5La0.5FeMoO6-δ by the solid-phase technique from a stoichiometric mixture of oxides MoO3, La2O3 and Fe2O3 and SrCO3 and precursors Sr0.5La0.5FeO3 and SrMoO4. Using XRD and thermogravimetric analyses, the influence of synthesis modes on the chemical processes occurring during the formation of double perovskite was studied. It has been established that the synthesis of lanthanum-strontium ferromolybdate in a mixture of oxides proceeds through a number of series-parallel stages. At the initial stage of interaction, the resulting lanthanum-strontium ferromolybdate is enriched with iron and its composition changes during the reaction towards an increase in the molybdenum content. As the temperature increases, the content of double perovskite increases, and the concentration of the secondary phase SrMoO4 does not disappear to zero until the synthesis temperature, which indicates that solid-phase reactions with the formation of a solid solution Sr1.5La0.5FeMoO6-δ from oxides are difficult to occur. It was determined that to minimize the influence of intermediate reaction products it is necessary to use precursors Sr0.5La0.5FeO3 and SrMoO4. Based on the results of studying the temperature dependences of the degree of phase transformations during the crystallization of double perovskite, combined heating modes were optimized. The use of optimized synthesis modes made it possible to obtain single-phase Sr1.5La0.5FeMoO6-δ powder with the superstructural ordering (82%), the Curie temperature of 450 K and a magnetization value of 40.9 A · m2 · kg-1 at T = 77 K in a magnetic field with induction B ≥ 0.86 T.https://moem.pensoft.net/article/116107/download/pdf/ |
| spellingShingle | Marta V. Yarmolich Nikolay A. Kalanda Alexander V. Petrov Dmitry A. Kiselev Nikolay A. Bosak Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture Modern Electronic Materials |
| title | Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture |
| title_full | Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture |
| title_fullStr | Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture |
| title_full_unstemmed | Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture |
| title_short | Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture |
| title_sort | magnetic properties of sr1 5la0 5femoo6 δ depending on the phase composition of the reaction mixture |
| url | https://moem.pensoft.net/article/116107/download/pdf/ |
| work_keys_str_mv | AT martavyarmolich magneticpropertiesofsr15la05femoo6ddependingonthephasecompositionofthereactionmixture AT nikolayakalanda magneticpropertiesofsr15la05femoo6ddependingonthephasecompositionofthereactionmixture AT alexandervpetrov magneticpropertiesofsr15la05femoo6ddependingonthephasecompositionofthereactionmixture AT dmitryakiselev magneticpropertiesofsr15la05femoo6ddependingonthephasecompositionofthereactionmixture AT nikolayabosak magneticpropertiesofsr15la05femoo6ddependingonthephasecompositionofthereactionmixture |