Magnetic and magneto-optic study of a layered Co/Pt - dysprosium-iron-garnet system

J. M. Meldrim, R. D. Kirby, M. J. Devries, J. A. Woollam, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review


We have studied the effects of placing Co/Pt multilayers on dysprosium-iron-garnet doped with bismuth and aluminum. The garnet was deposited by RF-magnetron sputtering and crystallized by rapid thermal annealing. The Co/Ft multilayers were then deposited by DC-magnetron sputtering. The garnet thickness was held constant at 1000Å while the Co/Pt multilayer had the form of [3ÅCo/9ÅPt] n with n ranging from 1 to 16. Coercivities of the samples ranged from about 300 to 2000 Oe. Kerr rotations were as high as 1.8° and ellipticities up to 2° depending upon the wavelength of light and the number of Co/Pt bilayers. Magneto-optic signal figures of merit are determined for several of these composite systems.

Original languageEnglish (US)
Pages (from-to)1988-1990
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number4 PART 1
StatePublished - 1998


  • Cobalt
  • Garnet
  • Magneto-optic
  • Platinum

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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