Magneto-optic Kerr effect and magnetic properties of ferromagnetic semiconducting MnGeAs2 thin films

Jeongyong Choi*, Wuwei Feng, Sunglae Cho, Weiqiang Mu, J. B. Ketterson, C. C. Tsai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We have studied the magneto-optic Kerr effect (MOKE) and static magnetic properties of MnGeAs2 films grown by using molecular beam epitaxy (MBE) and prepared in different arsenic ambiences. Both reflection high energy electron diffraction (RHEED) and 0-29 X-ray diffraction confirm epitaxial growth. We have observed the As pressure dependency in MOKE hysteresis and a well-defined rectangular MOKE hysteresis in the film grown at a 1.8 x 10-6 Torr As pressure. These As pressure dependent magnetic properties are related to defects in the MnGeAs2 films.

Original languageEnglish (US)
Pages (from-to)144-148
Number of pages5
JournalJournal of the Korean Physical Society
Volume55
Issue number1
DOIs
StatePublished - Jul 1 2009

Keywords

  • DMS
  • MOKE

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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