Ferromagnetism in Mn-doped Sb2Te

H. Luo, Q. Gibson, J. Krizan, R. J. Cava

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We report that Sb2Te, a natural superlattice phase consisting of two elemental Sb2 layers interleaved with single Sb2Te3 layers, becomes ferromagnetic at low temperatures on doping with small percentages of Mn. Ferromagnetism appears for Mn concentrations as low as Sb1.98Mn0.02Te, where a ferromagnetic Tc of ∼8.6 K is observed. Tc decreases with increasing Mn content in the stoichiometric materials but increases with increasing Te excess in materials of the type Sb1.93-yMn0.07Te1+y, starting at ∼3 K at y = 0 and reaching a Tc of ∼8.9 K at y = 0.06.

Original languageEnglish (US)
Article number206002
JournalJournal of Physics Condensed Matter
Volume26
Issue number20
DOIs
StatePublished - May 21 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Keywords

  • diluted ferromagnetic semiconductor
  • ferromagnetism

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