Thickness dependence of magneto-optic effects in terbium-iron films

Tu Chen, M. Mansuripur, R. Malmhäll

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Reflectivity, polar Kerr rotation, and magneto-optical (M-o) response of rf-sputtered amorphous TbFe thin films, overcoated with thermally evaporated SiO, were measured as a function of TbFe film thickness in the range 5-150 nm. The optical and M-o properties were found to depend strongly on film thickness and deviations from theoretical calculations were particularly large for very thin films. It was suggested that the complex dielectric tensor, and hence the index of refraction and absorption coefficient, vary with film thickness due to existence of an island-like /void microstructure for very thin films. The importance of an experimental determination of optical and M-O properties in relation to a theoretical computation was pointed out.

Original languageEnglish (US)
Pages (from-to)260-263
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume382
DOIs
StatePublished - Jan 1 1983
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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