MOSSBAUER STUDIES OF FE(100)/AG(100) MULTILAYERS GROWN ON NACL(100) BY MOLECULAR-BEAM EPITAXY

[摘要] Fe(100)/Ag(100) heterostructures, with varying Fe bilayer thicknesses equal to 3, 6 and 9 monolayers (ML) and a constant Ag bilayer thickness equal to 40 ML, were grown on suitably prepared monocrystalline NaCl(100) substrates by molecular beam epitaxy. The multilayer monocrystallinity was verified with in situ reflection high energy electron diffraction. Transmission Mossbauer measurements revealed a perpendicular surface anisotropy for the Fe(100) bilayers at 4.2 K. This behavior is unlike that of Fe(110)/Ag(111) ultrathin films of about the same thickness.

[发布日期] 1991-09-01