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

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2949

Lastpage

2951

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803178

Filename

1042420