Magnetic properties of ferromagnetic thin films obtained by Magneto-Optic Kerr Effect measurements

Author

Allocca, L. ; Baltador, C. ; Morone, A. ; Attanasio, C. ; Cirillo, C. ; Gambardella, Umberto

Author_Institution

Ist. Motori, Naples, Italy

fYear

2014

fDate

7-9 May 2014

Firstpage

1

Lastpage

3

Abstract

A system based on the Magneto-Optic Kerr Effect for contactless characterization of magnetic thin films has been developed. The system is made of a 635 nm laser source, two polarizers and a photo elastic modulator. The light is reflected on a thin film of magnetic material placed in the air gap of an Helmholtz pair in the longitudinal configuration. MOKE measurements have been performed to investigate the magnetic properties of thin films of different materials, as FeNi (Permalloy) and SmCo with different thicknesses, grown by magnetron sputtering and pulsed laser deposition techniques, respectively. Key magnetic features of the films are reported, as well as preliminary Kerr parameters obtained from measurements.

Keywords

Helmholtz equations; Kerr magneto-optical effect; Permalloy; ferromagnetic materials; optical modulation; optical polarisers; pulsed laser deposition; samarium alloys; sputtering; FeNi; Helmholtz pair; MOKE measurements; Permalloy; SmCo; ferromagnetic thin films; magnetic properties; magnetooptic Kerr effect; magnetron sputtering; photoelastic modulator; polarizers; pulsed laser deposition; wavelength 635 nm; Kerr effect; Magnetic hysteresis; Magnetic multilayers; Magnetization; Magnetometers; Perpendicular magnetic anisotropy; Kerr effect; ferromagnetic material; hysteresis loop; laser;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Conference, 2014 Third Mediterranean

Conference_Location

Trani

Type

conf

DOI

10.1109/MePhoCo.2014.6866477

Filename

6866477