Ferromagnetism in (In, Mn)As alloy thin films grown by metalorganic vapor phase epitaxy

A. J. Blattner, Bruce W Wessels*

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Ferromagnetic properties of In 1-x Mn x As thin films were investigated. Room temperature ferromagnetic order was observed in nominally single-phase films with x = 0.01-0.10. Magnetization measurements indicated that these In 1-x Mn x As samples had a Curie temperature of 333 K. The Curie temperature was independent of Mn concentration. The temperature dependent magnetization along with the magnitude of the saturation magnetization and microstructural data indicate that the source of the high-temperature ferromagnetism in single-phase films is not attributable to MnAs nanoprecipitates. The high transition temperature is attributed to the presence of near neighbor Mn pairs.

Original languageEnglish (US)
Pages (from-to)155-159
Number of pages5
JournalApplied Surface Science
Volume221
Issue number1-4
DOIs
StatePublished - Jan 15 2004

Keywords

  • Diluted magnetic semiconductors
  • Indium manganese arsenide
  • Metalorganic vapor phase epitaxy
  • Spintronics

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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