In:
Angewandte Chemie, Wiley, Vol. 128, No. 34 ( 2016-08-16), p. 10031-10034
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 HfMnSb 2 is reported with a novel metal‐ordered NiAs‐type structure. HfMnSb 2 undergoes 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 (Mn 2+ ; 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.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v128.34
DOI:
10.1002/ange.201602066
Language:
English
Publisher:
Wiley
Publication Date:
2016
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