Exotic magnetism of novel S = 1 kagome lattice antiferromagnet KV 3Ge 2O 9

Shigeo Hara, Hirohiko Sato, Yasuo Narumi

Research output: Contribution to journalReview articlepeer-review

18 Citations (Scopus)

Abstract

Single crystals of the novel vanadium oxide compound KV 3Ge 2O 9 have been synthesized. This compound has a hexagonal unit cell with the space group P6 3=mmc. Its lattice constants are a = 5.8624(4) Å and c = 13.7094(7) Å. KV 3Ge 2O 9 contains layers of edge-shared VO 6 octahedra, where V 3+ ions with an S = 1 spin form kagome lattice layers separated by double layers of GeO 4 tetrahedra. The magnetic susceptibility shows a broad maximum at approximately 70 K, suggesting that magnetic transition is suppressed in spite of the presence of strong antiferromagnetic interactions. Below approximately 20 K, the susceptibility under a magnetic field perpendicular to the kagome plane steeply drops toward zero, while the in-plane susceptibility diverges with reduction in temperature.

Original languageEnglish
Article number073707
Journaljournal of the physical society of japan
Volume81
Issue number7
DOIs
Publication statusPublished - 2012 Jul

Keywords

  • Frustration
  • Kagome lattice
  • Low-dimensional magnetism
  • Vanadium oxide

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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