Synthesis of new pure ferromagnetic semiconductors: MnGeP2 and MnGeAs2

Sunglae Cho*, Sungyoul Choi, Gi Beom Cha, Soon Cheol Hong, Yunki Kim, Arthur J. Freeman, John B. Ketterson, Yongsup Park, Hyun Min Park

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

We have synthesized two new chalcopyrite compounds: MnGeP2 and MnGeAs2. Total energy calculations predicted that both compounds are indirect semiconductors with band gaps of 0.24 and 0.06eV, respectively. Both compounds exhibit room-temperature ferromagnetism with TC ∼ 320 and 340 K for MnGeP2 and MnGeAs2, respectively, based on magnetization and resistance measurements. We have also observed the anomalous Hall effect, indicating polarization of the carriers.

Original languageEnglish (US)
Pages (from-to)609-613
Number of pages5
JournalSolid State Communications
Volume129
Issue number9
DOIs
StatePublished - Mar 2004

Keywords

  • A. Semiconductor compounds
  • D. Spin polarized transport in semiconductors

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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