Title :
Influence of oxygen content on the reduction of the ordering temperature of L1/sub 0/FePtCu alloy
Author :
Kikitsu, A. ; Maeda, T. ; Kai, T. ; Nagase, T. ; Akiyama, J. ; Fujioka, N. ; Ishigami, T.
Author_Institution :
Toshiba Corp., Kawasaki, Japan
fDate :
March 30 2003-April 3 2003
Abstract :
FePt ordered alloy has been studied extensively for use as a high-density magnetic recording medium because of its large magnetic anisotropy energy. In this paper, we have found that the reduction of the ordering temperature still depends on the content of residual oxygen in the FePtCu film. Change in the coercivity by the sputtering target as well as the base pressure of the sputtering chamber is discussed from the viewpoint of the oxygen content.
Keywords :
coercive force; copper alloys; ferromagnetic materials; iron alloys; magnetic recording; magnetic thin films; oxygen; platinum alloys; sputtered coatings; FePtCu film; FePtCu:O; coercivity; high-density magnetic recording medium; ordering temperature; oxygen content influence; residual oxygen; sputtering; Annealing; Chemical analysis; Coercive force; Iron; Magnetic anisotropy; Magnetic films; Oxygen; Perpendicular magnetic anisotropy; Sputtering; Temperature;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230895
