Title :
Hard magnetic Nd-Fe-B and Sm-Co films: influence of the Cr buffer microstructure on the magnetic properties
Author :
Hannemann, Ullrich ; Neu, Volker ; Fähler, Sebastian ; Holzapfel, Bernhard ; Schultz, Ludwig
Author_Institution :
IFW Dresden, Germany
fDate :
9/1/2002 12:00:00 AM
Abstract :
Hard magnetic Nd-Fe-B and Sm-Co films have been deposited on various substrates with a Cr buffer layer. The morphology of the buffer was modified from a smooth to a rough, meander-like structure. Films deposited on the rough buffers exhibit a significantly higher coercivity. The feasibility of Cr as a diffusion barrier and as an intermediate layer to induce magnetic texture in these systems is discussed.
Keywords :
boron alloys; chromium; cobalt alloys; coercive force; diffusion barriers; ferromagnetic materials; iron alloys; magnetic thin films; neodymium alloys; permanent magnets; samarium alloys; Cr; Cr buffer microstructure; Nd-Fe-B; Nd-Fe-B film; Sm-Co; Sm-Co film; coercivity; diffusion barrier; hard magnetic properties; intermediate layer; layer morphology; magnetic texture; Chromium; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic properties; Microstructure; Morphology; Perpendicular magnetic anisotropy; Saturation magnetization; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803178
