GMR effect of permalloy/Cu multilayers on Si(100) and Si(111)

C. H. Ho*, C. K. Lo, Y. D. Yao, S. F. Lee, I. Klik, M. T. Lin, Y. Liou, D. Y. Chiang, Der-Ray Huang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

[Permalloy1.5nm/Cu(t)]n multilayers with a 5 nm thick Fe buffer layer were sputtered on Si(100) and Si(111). Under the same preparation condition, the giant magnetoresistance (GMR) ratio of the multilayers on Si(100) is always larger than that on Si(111). The GMR ratio is very sensitive to the Ar gas pressure during sputtering. We found that 2 m Torr is the optimum discharge gas pressure. Electrical and magnetic properties of permalloy/Cu multilayers with a Cu layer thickness (t) near its second oscillatory peak were reported. We conclude that the GMR ratio of the [permalloy/Cu(t)]n multilayers was strongly dependent on the Cu layer thickness t, on the periodicity number n, and on the (100) crystalline orientation of the Si substrate.

Original languageEnglish
Pages (from-to)73-77
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
Volume517
StatePublished - 1 Dec 1998
EventProceedings of the 1998 MRS Spring Symposium - San Francisco, CA, USA
Duration: 13 Apr 199815 Apr 1998

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