Room-Temperature Ferromagnetism in [Formula presented] Semiconductors

Sunglae Cho, Sungyoul Choi, Gi Beom Cha, Soon Cheol Hong, Yunki Kim, Yu Jun Zhao, Arthur J Freeman, John B. Ketterson, B. J. Kim, Y. C. Kim, Byung Chun Choi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We report on the discovery of a room-temperature ferromagnetic semiconductor in chalcopyrite [Formula presented] with [Formula presented]. We have also observed that, at temperatures below 47 K, samples for [Formula presented] and 0.2 show a transition to the antiferromagnetic (AFM) state, so that ferromagnetism is well defined to be present between 47 and 312 K. The observation that the AFM phase is most stable at low temperatures is consistent with the predictions of full-potential linearized augmented plane wave total energy calculations and has consequences for other chalcopyrite materials.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Issue number25
Publication statusPublished - Jan 1 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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