Magnetooptical response of permalloy multilayer structures on different substrate in the IR-VIS-UV spectral range

Autor: Patra, Rajkumar, Mattheis, Roland, St��cker, Hartmut, Monecke, Manuel, Salvan, Georgeta, Sch��fer, Rudolf, Schmidt, Oliver G., Schmidt, Heidemarie
Jazyk: angličtina
Rok vydání: 2019
Předmět:
DOI: 10.34657/5704
Popis: 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
Databáze: OpenAIRE