Interlayer coupling in NiFe/Mo multilayers and effect of Fe underlayer

M. L. Yan, Z. S. Shan, D. J. Sellmyer, W. Y. Lai

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We report our studies of exchange coupling in NiFe/Mo multilayers with and without Fe underlayer. The interlayer coupling of NiFe layers across the Mo spacer as well as the magnetic exchange coupling between Fe underlayer and the NiFe/Mo multilayers were observed: The interlayer coupling in NiFe/Mo multilayers exhibits the typical oscillations as a function of the Mo spacer with a period of about 11 Å, and the magnetic exchange coupling between Fe underlayer and the NiFe/Mo multilayers is strongly dependent on the thickness of the Mo spacer tMo and the bilayer number N of NiFe/Mo multilayers. For the [NiFe(20 Å)/Mo (tMo)]30 samples with a 100 Å Fe underlayer, the hysteresis loops with thinner Mo spacer (tMo < 4 Å) are single loops indicating that the Fe underlayer is strongly magnetic exchange coupled with the NiFe/Mo multilayers: whereas hysteresis loops with thicker Mo spacer (tMo ≥ 5 Å) show a two-magnetic-phase feature. For the [NiFe(20 Å)/Mo(10 Å)]30 sample with 100 Å Fe underlayer, the hysteresis loops are single loops for bilayer number N < 15, while hysteresis loops show the two-phase feature for N ≥ 15.

Original languageEnglish (US)
Pages (from-to)4785-4787
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2B
StatePublished - Apr 15 1997

    Fingerprint

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yan, M. L., Shan, Z. S., Sellmyer, D. J., & Lai, W. Y. (1997). Interlayer coupling in NiFe/Mo multilayers and effect of Fe underlayer. Journal of Applied Physics, 81(8 PART 2B), 4785-4787.