Scarpulla, Michael A.Dubon, Oscar D.Yu, Kin ManMonteiro, OrthonPillai, Manoj R.Aziz, MichaelRidgway, Mark C.2009-04-302003Scarpulla, Michael A., Oscar D. Dubon, Kin Man Yu, Orthan Monteiro, Manoj R. Pillai, Michael J. Aziz, and Mark C. Ridgway. 2003. Ferromagnetic Ga1-xMnx as films produced by ion implantation and pulsed laser melting. Applied Physics Letters 82(8): 1251-1253.0003-6951http://nrs.harvard.edu/urn-3:HUL.InstRepos:2875820We demonstrate the formation of ferromagnetic Ga<sub>1-x</sub>Mn<sub>x</sub>As films by Mn ion implantation into GaAs followed by pulsed-laser melting. Irradiation with a single excimer laser pulse results in the epitaxial regrowth of the implanted layer with Mn substitutional fraction up to 80% and effective Curie temperature up to 29 K for samples with a maximum Mn concentration of x'0.03. A remanent magnetization persisting above 85 K has been observed for samples with x'0.10, in which 40% of the Mn resides on substitutional lattice sites. We find that the ferromagnetism in Ga<sub>1-x</sub>Mn<sub>x</sub>As is rather robust to the presence of structural defects.en-USFerromagnetic Ga1-xMnx as Films Produced by Ion Implantation and Pulsed Laser Melting10.1063/1.1555260