Abstract
The NiAs-type structure is one of the most common structures in solids, but metal order has been almost exclusively limited to chalcogenides. The synthesis of HfMnSb2is reported with a novel metal-ordered NiAs-type structure. HfMnSb2undergoes a conical spin order below 270 K, in marked contrast to conventional magnetic order observed in NiAs-type pnictides. We argue that the layered arrangement of Hf and Mn makes it a quasi 2D magnet, where the Mn layers with localized magnetic moments (Mn2+; S=5/2) can interact only through RKKY interactions, instead of metal–metal bonding that is otherwise dominant for typical NiAs-type pnictides. This result suggests that controlling order–disorder in NiAs-type pnictides enables a study of 2D-to-3D crossover behavior in itinerant magnetic system.
Original language | English |
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Pages (from-to) | 9877-9880 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 55 |
Issue number | 34 |
DOIs | |
Publication status | Published - 2016 Aug 16 |
Externally published | Yes |
Keywords
- NiAs structure
- cation order
- conical spin order
- pnictides
- solid-state structures
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)