Properties of Heusler alloy Co2Cr1-xFexAl superlattices and spin valves

Kelekar, R.; Clemens, B. M.
June 2005
Applied Physics Letters;6/6/2005, Vol. 86 Issue 23, p232501
Academic Journal
We investigate the properties of epitaxial Co2Cr1-xFexAl-based multilayers grown by dc magnetron sputtering upon MgO substrates. Co2Cr1-xFexAl/Cr superlattices of high epitaxial quality can be grown, though no evidence for antiferromagnetic coupling is observed. Simple spin-valve trilayers of the form Co2Cr1-xFexAl/Cu/Co90Fe10 show large giant magnetoresistances of up to 6.8% at room temperature, comparable to the highest achieved in conventional exchange-biased spin valves.


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