Title :
Anisotropic magnetoresistance in a-Fe/sub 90-x/Mn/sub x/Zr/sub 10/ alloys (0/spl les/x/spl les/12)
Author :
Srinivas, Veeturi ; Roy, Anirban ; Perumal, A. ; Nigam, A.K. ; Chandra, Girish ; Dunlap, R.A.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., Kharagpur, India
Abstract :
Summary form only given. The anisotropic magnetoresistance is determined in a number of amorphous Fe/sub 90-x/Mn/sub x/Zr/sub 10/ reentrant alloys with x=0, 4, 8 and 12 by performing magnetoresistance measurements in fields up to 50kOe in the temperature range between 4.2 K and 300 K. The measurements show that the spontaneous resistive anisotropy (SRA) first appears at a temperature close to the ferromagnetic ordering temperature. The relation between the SRA and magnetization is examined. The two current conduction model provides satisfactory and straightforward explanation for the observed results but also conclusive evidence for weak itinerant ferromagnetism. The weak itinerant-like behavior is also supported by the high field susceptibility data.
Keywords :
amorphous magnetic materials; band model of magnetism; ferromagnetic materials; iron alloys; magnetisation; magnetoresistance; manganese alloys; weak ferromagnetism; zirconium alloys; 4.2 to 300 K; Fe/sub 90-x/Mn/sub x/Zr/sub 10/; a-Fe/sub 90-x/Mn/sub x/Zr/sub 10/ alloys; anisotropic magnetoresistance; ferromagnetic ordering; magnetization; spontaneous resistive anisotropy; two current conduction model; weak itinerant ferromagnetism; Anisotropic magnetoresistance; Iron alloys; Magnetic field measurement; Magnetic variables measurement; Magnetization; Manganese alloys; Performance evaluation; Solid state circuits; Temperature distribution; Zirconium;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001421
