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Optical Engineering

Magneto-optical Kerr-effect enhancement in glass/Cu/SnO2/Co/SnO2 thin films
Author(s): Majid Ghanaatshoar; Mehrdad Moradi
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Paper Abstract

We incorporate Co thin layers into the quadrilayer structure of glass/Cu/SnO2/Co/SnO2 and investigate the effect of transparent semiconductor SnO2 as cap and spacer layers on the magnitude of a magneto-optical Kerr signal. The theoretical calculations based on a 4 × 4 matrix method are exploited to find the best possible multilayer structure. Accordingly, we fabricate several samples and acquire large Kerr signals in both polar and longitudinal geometries. Furthermore, the effect of vacuum annealing on the magnetic response of the samples is investigated. It is revealed that annealing at high temperatures may reduce the Kerr response because of uncontrolled heat-induced interdiffusion of adjacent layers.

Paper Details

Date Published: 1 September 2011
PDF: 5 pages
Opt. Eng. 50(9) 093801 doi: 10.1117/1.3625419
Published in: Optical Engineering Volume 50, Issue 9
Show Author Affiliations
Majid Ghanaatshoar, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Mehrdad Moradi, Univ. of Kashan (Iran, Islamic Republic of)

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