Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
87 (2000), S. 4858-4860
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have studied the irreversible changes in the room temperature magnetoresistive properties of [Co(15Å)/Cu(9Å)]20 multilayer films after annealing at temperatures up to 300 °C. The maximum magnetoresistance was found to degrade with increasing annealing temperature and time, even at temperatures as low as 150 °C. The sensitivity to changes in the magnetic field also degraded upon annealing, but by a lesser amount due to the accompanying narrowing of the magnetoresistance versus field curves. The resistivity was estimated for the Co/Cu ML stack and the underlying Cu buffer layer before and after annealing at 240 °C. At the sacrifice of the maximum magnetoresistance and sensitivity, we find that we can improve the long-term stability of the magnetoresistive properties to long-term exposure at 150 °C (the upper operating temperature of a device) by annealing at elevated temperatures. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.373182
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