Temperature and thickness dependence of coercivity and magnetization of Co/Cu and Co/Si multilayers

S. Nafis, John A. Woollam, Z. S. Shan, D. J. Sellmyer

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Co/Cu and Co/Si multilayers of total thickness ∼3000 Å were prepared by rf and dc magnetron sputtering. The nominal thicknesses of the individual layers were in the range of 4 to 100 Å. A large coercivity (Hc) at 10 K was observed for very thin layers of Co in Co/Cu samples, and it decreased with increase of the Co layer thickness. For very thin layers of Co in Co/Cu samples, the layer behaved superparamagnetically. Similar behavior was not to be observed in Co/Si samples. With increased substrate temperature (Ts) during deposition, Hc was also observed to increase (decrease) for Co/Cu (Co/Si) samples. Magnetization data were modeled to determine the diffusion layer thicknesses.

Original languageEnglish (US)
Pages (from-to)6050-6052
Number of pages3
JournalJournal of Applied Physics
Volume70
Issue number10
DOIs
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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