Pressure-induced ferromagnetic states in Sr14MnAs11

J. Del Castillo, D. J. Webb, S. M. Kauzlarich, T. Y. Kuromoto

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Measurements of the temperature dependence of the magnetic susceptibility of Sr14MnAs11 were made from ambient pressure to P≤20 kbars. At ambient pressure this compound is known to be a semiconductor with a Curie susceptibility down to as low as 5 K. It is found that raising the pressure to 7 kbars enhances the susceptibility somewhat and that at pressures above 10-11 kbars the susceptibility is enhanced by more than an order of magnitude and an ordered magnetic state occurs with a transition temperature that increases as the pressure is increased. This suggests that the applied pressure leads to a band-crossing transition from semiconductor to metal and a consequent exchange coupling of the Mn spins.

Original languageEnglish (US)
Pages (from-to)4849-4852
Number of pages4
JournalPhysical Review B
Volume47
Issue number9
DOIs
StatePublished - 1993

ASJC Scopus subject areas

  • Condensed Matter Physics

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