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

doi:10.3938/jkps.55.144

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

Physics and Astronomy

Research output: Contribution to journal › Article › peer-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 language	English (US)
Pages (from-to)	144-148
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	55
Issue number	1
DOIs	https://doi.org/10.3938/jkps.55.144
State	Published - Jul 1 2009

Keywords

DMS
MOKE

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.3938/jkps.55.144

Cite this

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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.",

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AU - Choi, Jeongyong

AU - Feng, Wuwei

AU - Cho, Sunglae

AU - Mu, Weiqiang

AU - Ketterson, J. B.

AU - Tsai, C. C.

PY - 2009/7/1

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AB - 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.

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