Abstract
By using the magnetron sputtering, a Gd/CoFeTaB multilayer structure film was fabricated, and investigated the effect of annealing temperature on magnetic and magnetoresistance characteristics of the multilayer film. A magnetic compensation phenomenon was observed, which means there is an antiferromagnetic coupling in the Gd/CoFeTaB system. It was found that the annealing enhances the antiferromagnetic coupling, lead to increase the Gilbert damping coefficient. Furthermore, an unsaturated magnetoresistance effect was observed, which is explained by the electron-electron interaction in the system. It is expected that the artificial antiferromagnetic multilayer system with weak macro-magnetism and internal magnetic order will has a good application prospect for the development of spintronics devices.
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