Epitaxial Growths and Surface Science Techniques Applied to the Case of Ni Overlayers on Single Crystal Fe(001)
The rapidly increasing interest and activity in the study of epitaxially deposited magnetic films on single crystal substrates stem both from the ability to stabilize metastable crystalline structures which do not exist otherwise in nature and from theoretical predictions of enhanced magnetic moments and crystalline anisotropics in low dimensional systems. For example, recent spectacular experimental results1,2 and theoretical calculations3 show that the crystalline anisotropy field in ultrathin Fe films is capable of overcoming the demagnetizing field perpendicular to its surface, making such films an ideal building block for multilayered permanent supermagnets. This is an example of the creation of new magnetic materials by means of atomic engineering. It should be pointed out that such recent advances and future progress in atomic engineering would not be possible without Molecular Beam Epitaxy (MBE) techniques using controlled atomic beams in Ultra High Vacuum (UHV) and using state of the art surface science techniques such as Reflection High Energy Electron Diffraction (RHEED), spin polarized or unpolarized Auger Electron Spectroscopy (AES) and X-Ray Photoelectron Spectroscopy (XPS).
KeywordsNickel Microwave Anisotropy Acetone Torque
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