Submicron GaMn quasicrystals in ferromagnetic GaAs

J. P. Zhang*, A. K. Cheetham, K. Sun, J. S. Wu, K. H. Kuo, J. Shi, D. D. Awschalom

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


GaMn icosahedral particles with quasicrystalline order have been found in Mn implanted and rapidly annealed GaAs by means of selected-area electron diffraction, high-resolution, and dark-field electron microscopy. The orientation relationship between the submicron quasicrystals with the icosahedral (2/m 3̄5̄) symmetry and the face-centered cubic (fcc) GaAs matrix is determined to be: i5̄ (the fivefold inversion axis in (2/m 3̄5̄))//[110]GaAs, i3̄(the threefold inversion axis)//[111̄]GaAs, and i2(the twofold axis)//[121̄]GaAs. The statistics of these structural studies, combined with magnetic force microscopy, indicate that the submicron quasicrystals are ferromagnetic.

Original languageEnglish (US)
Pages (from-to)143-145
Number of pages3
JournalApplied Physics Letters
Issue number1
StatePublished - Jul 7 1997

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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