Title :
Magnetoresistance anisotropy and magnetization reversal processes in two different kinds of amorphous ferromagnets: a-Tb20(Fe 4Co1)80 and a-U45Sb45 Mn10
Author :
Freitas, P.P. ; Melo, L.V. ; Plaskett, T.S.
Author_Institution :
CFMC/INIC, Lisbon, Portugal
fDate :
9/1/1990 12:00:00 AM
Abstract :
New amorphous U-Sb-Mn ferromagnets with magnetoresistance anisotropy reaching 9% at low temperature have been recently discovered. The magnetoresistance hysteresis cycles for these systems are compared with those obtained in amorphous Tb-Fe-Co films. Results are discussed in terms of excess resistivity caused by domain walls at ±H c and resistivity anisotropy at saturation. Both effects are important in a-Tb-Fe-Co and U-Sb-Mn. The excess resistivity at ±Hc scales with |β´|2 where β´ is the tangent of the Hall angle
Keywords :
antimony alloys; cobalt alloys; ferromagnetic properties of substances; iron alloys; magnetic properties of amorphous substances; magnetisation reversal; magnetoresistance; manganese alloys; terbium alloys; uranium alloys; Tb20(Fe4Co)80; U45Sb45Mn10; a-Tb20(Fe4Co1)80; a-U45Sb45Mn10; amorphous ferromagnets; domain walls; excess resistivity; magnetization reversal; magnetoresistance anisotropy; magnetoresistance hysteresis cycles; saturation; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Conductivity; Giant magnetoresistance; Magnetic domain walls; Magnetic domains; Magnetic hysteresis; Magnetization reversal; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
