Zinc-blende-type MnAs nanoclusters embedded in GaAs

M. Yokoyama, H. Yamaguchi, T. Ogawa, M. Tanaka

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)


Structural, magnetic, and magneto-optical properties of GaAs:MnAs granular thin films have been investigated. Zinc-blende(ZB)-type MnAs clusters were found to be formed by annealing GaAs:MnAs at 500 °C with a ramp rate of 5 °Cmin under a nitrogen atmosphere. Magnetic and magneto-optical properties of this GaAs:MnAs granular material with ZB-type MnAs clusters were different from those of the GaAs:MnAs with NiAs-type hexagonal MnAs clusters. The ferromagnetic transition temperature TC of the GaAs:MnAs of ZB type is estimated to be 360 K, which is higher than TC (=313 K) of the NiAs-type hexagonal MnAs.

Original languageEnglish
Article number10D317
JournalJournal of Applied Physics
Issue number10
Publication statusPublished - 2005 May 15


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