Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films

J. H. Song*, Y. Cui, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We grew heteroepitaxial type-A MnAs thin films on GaAs(001) and Si(001) substrates and compared their crystal structures and magnetic properties. The type-A MnAs on the GaAs(001) substrate shows similar structural and magnetic properties as those in bulk form. However, the structure of the type-A MnAs on the Si(001) substrate is compressed and stretched along the MnAs 1̄100 and MnAs 1̄1̄ 20 directions, respectively, and exhibits weak ferromagnetism with a T c exceeding 400 K. These experimental observations indicate that the magnetic characteristics of MnAs are strongly correlated to the material's crystal structure.

Original languageEnglish (US)
Article number07E125
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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