Giant magnetoresistance effect of L1/sub 0/Fe/sub 50/Pt/sub 50/ grains

Author

Zhengang Zhang ; Kyongha Kang ; Omoto, N. ; Suzuki, Takumi

Author_Institution

Inf. Storage Mater. Lab., Toyota Technol. Inst., Nagoya, Japan

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

In this paper, the occurrence of giant magnetoresistance effect (GMR) in some metallic granular films and intimate relationship between GMR ratio and film microstructure, we tried to detect the microstructure of FePt-Ag composite granular films via GMR effect measurement. The film microstructure change with annealing temperature by TEM and X-ray reveals that the FePt grain size tends to increase. The increase in FePt grain size decreases the specific FePt grain surface area deteriorating GMR ratio.

Keywords

X-ray diffraction; annealing; composite materials; discontinuous metallic thin films; ferromagnetic materials; giant magnetoresistance; grain size; iron alloys; magnetic thin films; platinum alloys; silver alloys; transmission electron microscopy; FePt-Ag composite granular films; FePtAg; GMR effect; TEM; X-ray diffraction; annealing temperature; film microstructure; giant magnetoresistance effect; grain size; grain surface area; metallic granular films; transmission electron microscopy; Annealing; Coercive force; Giant magnetoresistance; Grain size; Helium; Iron; Saturation magnetization; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2003. INTERMAG 2003. IEEE International

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7647-1

Type

conf

DOI

10.1109/INTMAG.2003.1230768

Filename

1230768