Title :
Intrinsic properties and coercivity mechanism of epitaxial Nd/sub 2/Fe/sub 14/B films
Author :
Hannemann, U. ; Neu, V. ; Fahler, S. ; Holzapfel, B. ; Schultz, L.
Author_Institution :
IFW Dresden, Germany
fDate :
March 30 2003-April 3 2003
Abstract :
In this paper, we deposited epitaxial Nd/sub 2/Fe/sub 14/B films on a Ta [001] on Al/sub 2/O/sub 3/ substrates using the pulsed laser deposition technique from elemental targets. Films with almost perfect perpendicular magnetic anisotropy and out-of-plane coercivity up to 2 T can be achieved by deposition of surplus Nd, which decouples the Nd/sub 2/Fe/sub 14/B grains. Aside from the epitaxy and the intrinsic properties, we also investigated the coercivity mechanism of these samples using a phenomenological theory of Kronmuller et. al.
Keywords :
boron alloys; coercive force; ferromagnetic materials; iron alloys; magnetic epitaxial layers; neodymium alloys; perpendicular magnetic anisotropy; spontaneous magnetisation; texture; 2 T; Al/sub 2/O/sub 3/; Kronmuller theory; Nd/sub 2/Fe/sub 14/B; coercivity; epitaxial Nd/sub 2/Fe/sub 14/B films; intrinsic properties; perpendicular magnetic anisotropy; phenomenological theory; pulsed laser deposition; Coercive force; Epitaxial growth; Iron; Magnetic films; Mechanical factors; Neodymium; Optical pulses; Perpendicular magnetic anisotropy; Pulsed laser deposition; Substrates;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230897
