Title :
A comparison of highly coercive FePt films prepared by pulsed laser deposition and electrodeposition
Author :
Fähler, S. ; Weisheit, M. ; Leistner, K. ; Schlörb, H. ; Thomas, J. ; Schultz, L.
Author_Institution :
IFW Dresden, Germany
Abstract :
Two alternative preparation routes for FePt films are compared: pulsed laser deposition (PLD) and electrodeposition. It is described how an optimal microstructure can be obtained for best magnetic properties, and the advantages of both preparation routes are discussed. The low slope of the initial magnetization curve annealed at optimum conditions indicates that coercivity in electrodeposited granular films is controlled by pinning. In contrary, epitaxial films prepared by PLD on MgO(100) show that domain reversal in FePt films reaching the highest coercivity is governed by nucleation.
Keywords :
annealing; coercive force; crystal microstructure; discontinuous metallic thin films; electrodeposits; ferromagnetic materials; iron alloys; magnetic domains; magnetic epitaxial layers; nucleation; platinum alloys; pulsed laser deposition; FePt; MgO; annealing; coercivity; domain reversal; electrodeposition; granular epitaxial films; magnetic properties; magnetization curve; nucleation; optimal microstructure; pinning; pulsed laser deposition; Annealing; Coercive force; Magnetic analysis; Magnetic anisotropy; Magnetic films; Magnetic properties; Microstructure; Optical pulses; Pulsed laser deposition; Saturation magnetization;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464068
