| Title: |
Magnetooptical response of permalloy multilayer structures on different substrate in the IR–VIS–UV spectral range. |
| Authors: |
Rajkumar Patra1,2 rajkumar.patra@uni-jena.de, Roland Mattheis3, Hartmut Stöcker4, Manuel Monecke5, Georgeta Salvan5, Rudolf Schäfer6,7, Oliver G Schmidt8,9, Heidemarie Schmidt1,2,3 Heidemarie.Schmidt@leibniz-ipht.de |
| Source: |
Journal of Physics D: Applied Physics. 11/27/2019, Vol. 52 Issue 48, p1-1. 1p. |
| Subject Terms: |
*MUELLER calculus, *BINARY metallic systems, *COUPLING constants, *THIN films, *ZINC oxide films |
| Abstract: |
The magnetooptical (MO) response of Ru/Py/Ta thin film stacks with 4, 8, and 17 nm thick Ni81Fe19 permalloy (Py) films on a SiO2/Si and a ZnO substrate was measured by vector magnetooptical generalized ellipsometry. The MO response from VMOGE was modelled using a 4 × 4 Mueller matrix algorithm. The wavelength-dependent, substrate-independent and thickness-independent complex MO coupling constant (Q) of Py in the Ru/Py/Ta thin film stacks was extracted by fitting Mueller matrix difference spectra in the spectral range from 300 nm to 1000 nm. Although the composition-dependent saturation magnetization of NixFe1−x alloys (x = 0.0…1.0), e.g. of Ni81Fe19, is predictable from the two saturation magnetization end points, the MO coupling constant of NixFe1−x is not predictable from the two Q end points. However, in a small alloy range (0.0 < x < 0.2 and 0.8 < x < 1.0) the composition-dependent Q of NixFe1−x can be interpolated from a sufficiently high number of analyzed NixFe1−x alloys. The available complex MO coupling constants of six different NixFe1−x (x = 1.0 to 0.0) alloys were used to interpolate MO response of binary NixFe1−x alloys in the range from x = 0.0 to x = 1.0. [ABSTRACT FROM AUTHOR] |
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| Database: |
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