Rotating analyzer magneto-optic spectroscopy

Liang Yao Chen, John A. Woollam

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, θKis obtained. Magnetic field and spectral scanning, as well as data processing,’ are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.

Original languageEnglish (US)
Pages (from-to)267-277
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1166
DOIs
StatePublished - Jan 25 1990

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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