ausblenden:
Schlagwörter:
-
Zusammenfassung:
We report on the magnetotransport properties of Co2Cr0.6Fe0.4Al mixed
with insulating Al2O3. The powder compacts show a maximum
magnetoresistance of 88% at a saturation moment of 0.125 T at 295 K.
Different explanations for the reversible mechanism will be discussed,
such as tunneling between contiguous ferromagnetic grains, particle
movement, and magnetostriction. The effect in Co2Cr0.6Fe0.4Al/Al2O3
powder compacts is the largest room temperature magnetoresistance that
has been measured until now.