AI Article Synopsis
- The study investigates the synthesis and magnetic properties of rare-earth doped cobaltites, (RE)CoO, using microwave-assisted methods.
- The crystal structure varies with the size of the rare-earth cation: LaCoO has a rhombohedral symmetry while Pr-Dy CoO exhibits orthorhombic symmetry.
- The research also reveals that the magnetic properties of LaCoO, particularly the transitions of Co (d) spin states, change significantly when different rare-earth cations are introduced, leading to diverse magnetic behaviors in the materials.
Article Abstract
The series of perovskite rare-earth (RE) doped cobaltites (RE)CoO (RE = La-Dy) was prepared by microwave-assisted synthesis. The crystal structure undergoes a change of symmetry depending on the size of the RE cation. LaCoO is rhombohedral, S.G. R3̅c (No. 167), while, for the rest of the RE series (Pr-Dy), the symmetry is orthorhombic, S.G. Pnma (No. 62). The crystal structure obtained by X-ray diffraction was confirmed by high-resolution transmission electron microscopy, which yielded a good match between experimental and simulated images. It is further shown that the well-known magnetism in LaCoO, which involves a thermally induced Co (d) low spin to intermediate or high spin state transition, is strongly modified by the RE cation, and a rich variety of magnetic order has been detected across the series.
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| http://dx.doi.org/10.1021/acs.inorgchem.6b02557 | DOI Listing |
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