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


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
Issue number1
StatePublished - Jul 1 2009


  • DMS
  • MOKE

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Magneto-optic Kerr effect and magnetic properties of ferromagnetic semiconducting MnGeAs<sub>2</sub> thin films'. Together they form a unique fingerprint.

Cite this