HfMnSb2: A Metal-Ordered NiAs-type Pnictide with a Conical Spin Order

Taito Murakami, Takafumi Yamamoto, Cédric Tassel, Hiroshi Takatsu, Clemens Ritter, Yoshitami Ajiro, Hiroshi Kageyama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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 languageEnglish
Pages (from-to)9877-9880
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number34
Publication statusPublished - 2016 Aug 16
Externally publishedYes


  • NiAs structure
  • cation order
  • conical spin order
  • pnictides
  • solid-state structures

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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