Magneto-Optical Modulation Ellipsometry

TL;DR

This paper presents a method using ellipsometry to measure magneto-optical parameters and optical constants in ferromagnetic materials, demonstrating its application across different Kerr effect geometries.

Contribution

It introduces a novel ellipsometric approach for simultaneous measurement of magneto-optical and optical constants in ferromagnets at a fixed light incidence angle.

Findings

Effective measurement of magneto-optical parameters demonstrated on ferromagnetic Ni.

Formulas relating measured signals to optical constants are derived for various Kerr geometries.

The method enables comprehensive characterization of ferromagnetic materials in a single experiment.

Abstract

The paper investigates the ellipsometric method of measuring the magneto-optical parameter and optical constants in one experiment at affixed angle of the light incidence in ferromagnetics. The influence of the magnetization modulation on the change of ellipsometrical angles is shown. The method is considered for the geometries of polar, meridional and equatorial reflection Kerr effects. The formulae relating to the measured signals in polarizer-subject-analyzer (PSA) circuit with four magneto-optical and optical constants illustrated by the example of ferromagnetic Ni are given.