STRUCTURE, MAGNETISM AND MAGNETORESISTANCE OF ANNEALED Co/Cu DISCONTINUOUS MULTILAYERS

Acta Metallurgica Sinica (English Letters) ›› 1997, Vol. 10 ›› Issue (6): 465-473.

• Research paper • Previous Articles Next Articles

STRUCTURE, MAGNETISM AND MAGNETORESISTANCE OF ANNEALED Co/Cu DISCONTINUOUS MULTILAYERS

Received:1997-12-25 Revised:1997-12-25 Online:1997-12-25 Published:2009-10-10

Abstract

Abstract: Co/Cu discontinuons multilayers were prepared by rf-sputtering method under high sputtering power and then annealed at various temperutures in a high vacuum. The structural, magnetic and transport properties were strongly influenced by the annealing temperature. The annealed samples obviously became discontinuous multilayers.A maximum magnetoresistance ratio of 5.6% was obtained under a relatively low saturation field of about 400 (103/4π)A/m at the optimum annealing temperature of 450℃. When the annealing temperature was increased, the resistivity decreased, and the coercive force and the saturation field increased. The magnetoresistance ratio also depended on the thickness of Co and Cu layers. The magnetic and transport properties were explained on the basis of the discontinuous multilayered structure.

Key words: discontinuous multilayers, giant magnetoresistance, magnetism

S.S. Yan;J.X. Lou;L. Zhang; R.Z. Zhang; Y.M. Zhang;Y.H. Liu; L.M. Mei and J. Huang(Department of Physics, Shandong University, Jinan 250100, China)(Department of Environment Engineering, Shandong University, Jinan 250100, China). STRUCTURE, MAGNETISM AND MAGNETORESISTANCE OF ANNEALED Co/Cu DISCONTINUOUS MULTILAYERS[J]. Acta Metallurgica Sinica (English Letters), 1997, 10(6): 465-473.

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STRUCTURE, MAGNETISM AND MAGNETORESISTANCE OF ANNEALED Co/Cu DISCONTINUOUS MULTILAYERS

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