Spectral ellipsometry as a method for characterization of nanosized films with ferromagnetic layers


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Аннотация

Nanosized films with ferromagnetic layers are widely used in nanoelectronics, sensor systems and telecommunications. Their properties may strongly differ from those of bulk materials that is on account of interfaces, intermediate layers and diffusion. In the present work, spectral ellipsometry and magnetooptical methods are adapted for characterization of the optical parameters and magnetization processes in two- and three-layer Cr/NiFe, Al/NiFe and Сr(Al)/Ge/NiFe films onto a sitall substrate for various thicknesses of Cr and Al layers. At a layer thickness below 20 nm, the complex refractive coefficients depend pronouncedly on the thickness. In two-layer films, remagnetization changes weakly over a thickness of the top layer, but the coercive force in three-layer films increases by more than twice upon remagnetization, while increasing the top layer thickness from 4 to 20 nm.

Авторлар туралы

H. Hashim

National Research Technological University “MISiS,”

Хат алмасуға жауапты Автор.
Email: hh@science.tanta.edu.eg
Ресей, Moscow

S. Singkh

National Research Technological University “MISiS,”

Email: hh@science.tanta.edu.eg
Ресей, Moscow

L. Panina

National Research Technological University “MISiS,”; Institute of Design Problems in Microelectronics

Email: hh@science.tanta.edu.eg
Ресей, Moscow; Moscow

F. Pudonin

Lebedev Physical Institute

Email: hh@science.tanta.edu.eg
Ресей, Moscow

I. Sherstnev

Lebedev Physical Institute

Email: hh@science.tanta.edu.eg
Ресей, Moscow

S. Podgornaya

National Research Technological University “MISiS,”

Email: hh@science.tanta.edu.eg
Ресей, Moscow

I. Shpetnyi

Sumy State University

Email: hh@science.tanta.edu.eg
Украина, Sumy

A. Beklemisheva

National Research Technological University “MISiS,”

Email: hh@science.tanta.edu.eg
Ресей, Moscow

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