AI Article Synopsis
- The study involves the synthesis of three mixed-valence barium iron fluorides (BaFeF series) using hydrothermal redox reactions, resulting in unique structural characteristics.
- Each compound showcases different arrangements of FeF units: BaFeF features 1D infinite [FeFeF] double chains, BaFeF contains 1D [FeF] double chains, and BaFeF has a complex 3D framework with isolated FeF units.
- Magnetic studies reveal that BaFeF undergoes an antiferromagnetic phase transition at ~11 K, while BaFeF exhibits canted antiferromagnetic ordering at ~32.5 K, indicating distinct magnetic properties influenced by their structural configurations.
Article Abstract
Three mixed-valence barium iron fluorides, BaFeF, BaFeF, and BaFeF, were prepared through hydrothermal redox reactions. The characteristic structures of these compounds feature diverse distributions of FeF octahedra and FeF groups. BaFeF contained one-dimensional infinite [FeFeF] double chains, comprising corner-sharing octahedra along the direction; BaFeF contained one-dimensional [FeF] double chains, consisting of corner-sharing octahedra along the chain (-axis direction) and corner-sharing octahedra vertical to the chain, while BaFeF revealed three-dimensional (3D) frameworks that consist of isolated edge-sharing dinuclear FeF units linked via corners by FeF octahedra. Magnetization and Mössbauer spectroscopy measurements revealed that BaFeF exhibits an antiferromagnetic phase transition at ∼11 K, where ferrimagnetic [FeFeF] double chains are arranged in a paralleling manner, while BaFeF shows canted antiferromagnetic ordering at ∼32.5 K, leading to noncollinear spin ordering.
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| http://dx.doi.org/10.1021/acs.inorgchem.3c02076 | DOI Listing |
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