Geometric magnetic frustration in olivines

I. Hagemann, P. Khalifah, A. Ramirez, R. Cava

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

Polycrystalline samples of (Formula presented) and (Formula presented) were prepared and studied in the context of a search for geometrically frustrated magnetic materials. These compounds are isostructural with olivine, a series of minerals commonly found in the terrestrial crust. The olivine structure possesses a distinctive magnetic lattice in which metal ions sit at the vertices of corner-sharing triangles, forming alternating sawtooth chains. Magnetic susceptibility experiments reveal that the manganese-based olivines exhibit spin-glass transitions and magnetic frustration, while the cobalt olivine exhibits antiferromagnetic order with no suppression of the Néel temperature. The magnetic susceptibility of nickel olivine exhibits a large deviation from Curie-Weiss behavior, suggesting the presence of a magnetic structure in which a sublattice possessing a spin gap interacts with surrounding local-moment (Formula presented) ions.

Original languageEnglish (US)
Pages (from-to)R771-R774
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number2
DOIs
StatePublished - Jan 1 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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