Title :
Compositional dependence of magnetoresistance in TbFeCo amorphous films
Author :
Rahman, M.T. ; Liu, X. ; Matsumoto, Morio ; Morisako, A.
Author_Institution :
Fac. of Eng., Shinshu Univ., Nagano, Japan
Abstract :
Large uniaxial magnetic anisotropy enables the TbFeCo amorphous films as one of the good samples for studying its magnetotransport properties. The room temperature positive magnetoresistance (MR) in TbFeCo amorphous film has already been reported. However, the origin of the magnetoresistance is still doubtful. In this study, the effects of compositional change on the magnetotransport properties of TbFeCo films have been investigated. The origin of the magnetoresistance is also clarified. A significant effect of Tb content on the MR ratio has been observed which is believed to be due to the variation of domain wall width as a function of Tb content. The MR is attributable to the spin-dependent scattering at the domain wall.
Keywords :
amorphous magnetic materials; chemical analysis; cobalt alloys; iron alloys; magnetic anisotropy; magnetic domain walls; magnetic thin films; magnetoresistance; scattering; terbium alloys; TbFeCo; TbFeCo amorphous films; composition-dependent magnetoresistance; domain wall width; magnetotransport properties; room temperature positive magnetoresistance; spin-dependent scattering; uniaxial magnetic anisotropy; Amorphous magnetic materials; Amorphous materials; Magnetic anisotropy; Magnetic domain walls; Magnetic domains; Magnetic films; Magnetic properties; Magnetoresistance; Perpendicular magnetic anisotropy; Temperature;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463436
