Synthesis, Crystal Structure, and Magnetic Order of the Layered Iron Oxycarbonate Sr4Fe2O6CO3
| Autor: | Kazunari Yamaura, J. W. Lynn, Robert Joseph Cava, Qingzhen Huang, R. W. Erwin |
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| Rok vydání: | 2000 |
| Předmět: |
Magnetic structure
Chemistry Transition temperature Neutron diffraction Neutron scattering Condensed Matter Physics Magnetic susceptibility Electronic Optical and Magnetic Materials Inorganic Chemistry Tetragonal crystal system Crystallography Ferromagnetism Materials Chemistry Ceramics and Composites Antiferromagnetism Physical and Theoretical Chemistry |
| Zdroj: | Journal of Solid State Chemistry. 152:374-380 |
| ISSN: | 0022-4596 |
| Popis: | The iron oxycarbonate Sr 4 Fe 2 O 6 CO 3 is reported. The crystal structure and magnetic order were determined by magnetic susceptibility, powder neutron diffraction, and neutron scattering studies. The structure is tetragonal between 10 and 400 K ( I 4/mmm, a =3.88907(4) A and c =27.9818(4) A at 295 K), and is related to a 4:3 type Ruddlesden–Popper phase with CO 3 plaques in place of the middle layer of transition metal octahedra. The three-dimensional magnetic ordering transition temperature is 361 K. The magnetic order is antiferromagnetic within the FeO 2 /SrO/SrO/FeO 2 blocks and ferromagnetic between blocks. |
| Databáze: | OpenAIRE |
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