Spectroscopic ellipsometry and magneto-optical Kerr effect spectroscopy study of thermally treated Co60Fe20B20 thin films

We report the optical and magneto-optical properties of amorphous and crystalline Co60Fe20B20 films with thicknesses in the range of 10 nm to 20 nm characterized using spectroscopy ellipsometry (SE) and magneto-optical Kerr effect (MOKE) spectroscopy. We derived the spectral dependence of the dielec...

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Published in:Journal of physics. Condensed matter 2020-01, Vol.32 (5), p.055702-055702
Main Authors: Hoffmann, Maria A, Sharma, Apoorva, Matthes, Patrick, Okano, Shun, Hellwig, Olav, Ecke, Ramona, Zahn, Dietrich R T, Salvan, Georgeta, Schulz, Stefan E
Format: Article
Language:English
Subjects:
CoFeB
magneto-optical Kerr effect spectroscopy
spectroscopic ellipsometry
x-ray diffraction
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container_issue 5
container_start_page 055702
container_title Journal of physics. Condensed matter
container_volume 32
creator Hoffmann, Maria A
Sharma, Apoorva
Matthes, Patrick
Okano, Shun
Hellwig, Olav
Ecke, Ramona
Zahn, Dietrich R T
Salvan, Georgeta
Schulz, Stefan E
description We report the optical and magneto-optical properties of amorphous and crystalline Co60Fe20B20 films with thicknesses in the range of 10 nm to 20 nm characterized using spectroscopy ellipsometry (SE) and magneto-optical Kerr effect (MOKE) spectroscopy. We derived the spectral dependence of the dielectric tensor from experimental data for samples prior and after annealing in vacuum. The features of the dielectric function can be directly related to the transitions between electronic states and the observed changes upon annealing can be ascribed to an increase of the crystalline ordering of CoFeB.
doi_str_mv 10.1088/1361-648X/ab4d2f
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subjects CoFeB
magneto-optical Kerr effect spectroscopy
spectroscopic ellipsometry
x-ray diffraction
title Spectroscopic ellipsometry and magneto-optical Kerr effect spectroscopy study of thermally treated Co60Fe20B20 thin films
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