Preparation and characterization of Co single-crystal thin films with hcp, fcc and bcc structures
2011
Co crystals with three different structures are realized in the form of single-crystalthin films hetero-epitaxially grown on single-crystal substrates by ultrahigh vacuum rf magnetron sputtering. hcp-, fcc-, and bcc-Co single-crystalfilms are formed on Cr(211)bcc, Cu(100)fcc, and GaAs(110) B3, respectively. The film growth process is studied by RHEED, and the lattice constants of these Co films are determined by x-ray diffraction. The magnetization properties of these thin films are reflecting the magnetocrystalline anisotropies of Co crystals with the easy magnetization axes along hcp〈0001〉, fcc〈111〉, and bcc〈100〉 directions.
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