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The magnetoresistance (MR) variation of amorphous CoNbZr-based spin valves as a result of rapid recurrent thermal annealing (RRTA) has been investigated. At a lower annealing temperature (T a ), the RRTA samples have larger MR enhancement and superior thermal stability than conventional thermal annealing samples. With higher T a (400°C), the CoNbZr layer began to crystallize in the...
The magnetoresistance (MR) variation of Co/Cu/Co/CoNbZr spin valves as a result of rapid thermal annealing has been investigated. MR ratio of 3.8% was obtained in the as-deposited sample and a considerable increase to 6.86% was observed in the 450 o Cx60s treated sample. Microstructure studies show that the enhancement of MR ratio is a consequence of the nano-crystallization of amorphous CoNbZr...
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