Appl. Phys. Lett. 62 (15) pp 1842-1844

Influence of deposition temperature on giant magnetoresistance of Fe/Cr 
multilayers

S. S. P. Parkin and B. R. York

The giant magnetoresistance effect DeltaR/R in magnetron-sputter deposited 
Fe/Cr multilayers is shown to depend strongly on deposition temperature. 
The largest value of DeltaR and magnetoresistance are found in structures 
deposited at approx. 125 oC. Structures deposited at lower (approx. 30 oC) 
or higher (approx. 200 oC) temperatures exhibit lower DeltaR and DeltaR/R 
values. Low angle x-ray reflectivity and rocking curve data show that all 
the structures have well defined layers. However the largest giang MR 
values are found in structures which have the lowest high field 
resistivities, R, the longest structural coherence lengths and narrowest 
(11) rocking curve widths. These results suggest that more perfect 
structure have intrinsically higher giant magnetoresistance.