Title :
Giant magnetoresistance in bulk metallic multilayers prepared by cold deformation
Author :
Giguere, A. ; Dempsey, N.M. ; Verdier, M. ; Ortega, L. ; Givord, D.
Author_Institution :
Lab. Louis Neel, CNRS, Grenoble, France
fDate :
9/1/2002 12:00:00 AM
Abstract :
A cyclic mechanical deformation process combining hydrostatic extrusion and rolling has been used to prepare strongly textured bulk multilayer samples with individual layer thicknesses on the nanometer scale. CIP-MR values in the range 8%-1% were measured in both Fe-Ag and FeNi-Ag-CoFe samples in the temperature range 5 K to 300 K. Room-temperature CPP-MR values of 6% were measured in the FeNi-Ag-CoFe sample.
Keywords :
cobalt alloys; cold rolling; deformation; extrusion; giant magnetoresistance; iron; iron alloys; magnetic multilayers; nickel alloys; silver; texture; 5 to 300 K; Fe-Ag; FeNi-Ag-CoFe; bulk metallic multilayer; cold rolling; crystallographic texture; current-in-plane magnetoresistance; current-perpendicular-to-plane magnetoresistance; cyclic mechanical deformation; giant magnetoresistance; hydrostatic extrusion; Annealing; Billets; Electrical resistance measurement; Electrons; Giant magnetoresistance; Iron; Magnetic multilayers; Nonhomogeneous media; Temperature distribution; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802862
