Article ID Journal Published Year Pages File Type
1673441 Thin Solid Films 2008 5 Pages PDF
Abstract
Crystallinity and magnetic property of binary Fe-As compounds grown on GaAs(001) substrates by molecular beam epitaxy are described. At the substrate temperature of Ts = 300 °C or lower, the growth occurs in the form of polycrystalline diamagnetic FeAs2, whereas, at Ts = 400-500 °C, the growth of single-crystalline FeAs or Fe2As takes place depending on the relative amount of an As beam flux. At Ts = 600 °C, formation of polycrystalline FeAs with Fe-Ga-As ternary compounds starts to take place. Using these binary samples, magnetic susceptibility of FeAs2 and FeAs are extracted and compared with the bulk data. It is also revealed that these binaries do not exhibit photo-enhanced magnetization at room temperature.
Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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