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Molecule-like cluster magnetism and cationic order in the new hexagonal perovskite Ba(4)Sn(1.1)Mn(2.9)O(12)
The new hexagonal perovskite phase of composition Ba(4)Sn(1.1)Mn(2.9)O(12) has been synthesized by solid-state reactions at 1673 K. The crystal structure has been investigated using X-ray and neutron diffraction. The hexagonal perovskite structure has an ordered arrangement of Sn and Mn ions on the...
| Autores principales: | , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
The Royal Society of Chemistry
2021
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9044838/ https://www.ncbi.nlm.nih.gov/pubmed/35494139 http://dx.doi.org/10.1039/d1ra07841k |
| Sumario: | The new hexagonal perovskite phase of composition Ba(4)Sn(1.1)Mn(2.9)O(12) has been synthesized by solid-state reactions at 1673 K. The crystal structure has been investigated using X-ray and neutron diffraction. The hexagonal perovskite structure has an ordered arrangement of Sn and Mn ions on the corner-sharing octahedral centers and the face-sharing octahedral centers respectively. Short Mn–Mn distances have been evidenced in the face-sharing trimer of MnO(6) octahedra. The magnetic susceptibility shows magnetic cluster behavior, with cluster formation temperature ∼220 K. Antiferromagnetic order has been observed at T(N) ∼ 6 K. Ba(4)Sn(1.1)Mn(2.9)O(12) is a semiconductor with a transport activation energy of 0.61 eV. |
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