Title :
Magnetoresistance of Co-EuS macroscopic ferrimagnets
Author :
Gambino, Richard J. ; Wang, Jinsong ; McGuire, Thomas R.
Author_Institution :
Dept. of Mater. Sci. & Eng., State Univ. of New York, Stony Brook, NY, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
The magnetoresistance of Co-EuS is negative at room temperature but becomes positive at 4.2 K. This MR temperature dependence is attributed to interface scattering at the boundary of Co metal with EuS particles when the two magnetic phases are antiferromagnetically exchange coupled and have a compensation point at low temperatures
Keywords :
cobalt; europium compounds; exchange interactions (electron); ferrimagnetic materials; ferromagnetic materials; giant magnetoresistance; interface magnetism; magnetic particles; magnetoresistance; negative resistance; surface scattering; 20 C; 4.2 K; Co metal; Co-EuS; Co-EuS macroscopic ferrimagnets; EuS particles; antiferromagnetic exchange coupling; compensation point; ferromagnetic phases; interface scattering; low temperature; magnetic phases; magnetoresistance; negative resistance; positive resistance; room temperature; temperature dependence; Antiferromagnetic materials; Conducting materials; Ferrimagnetic materials; Giant magnetoresistance; Magnetic field measurement; Magnetic materials; Magnetization; Semiconductor materials; Temperature dependence; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
