Comparision of giant magneto-resistance behavior with conductance change based on the bulk-scattering in pseudo spin-valve

In this study, the effects of post annealing temperature ranging from 250 degC to 350 degC on the giant magnetoresistance (GMR) ratio and conductance change (DeltaG) have been investigated. The structure of the GMR spin-valve consists of Cu (10 A) / IrMn (80 A) / CoFe (15 A) / NOL / CoFe (20 A) / Cu (28 A) / CoFe (t
_f
) / NOL / Cu (10 A) / Al
₂
O
₃
where t
_f
is varied from 10 A to 200 A and NOL is a nano-oxide layer.