Author of thesis: Ing. Libor Vojáček
Acad. year: 2018/2019
Supervisor: M.Sc. Jon Ander Arregi Uribeetxebarria, Ph.D.
Reviewer: Ing. Lukáš Flajšman, Ph.D.
Abstract:The magneto-optical Kerr effect is a useful tool for accessing the magnetic properties of metallic surfaces. The magnetization reversal process controlled by an external applied field and magneto-optically measured can give us information about the anisotropic properties of magnetic systems. In the presented work, we review the theoretical aspects of magnetization reversal and the changes of light polarization upon reflection from a magnetized medium. Description of a functional, high-sensitivity magneto-optical setup based on the polarization modulation technique is given. The apparatus was assembled by modifying an already existing similar setup. Measurements on thin-film magnetic layers prove its functionality and reveal the properties of metamagnetic thin films from FeRh, which is a material with potential applications in spintronics.
magneto-optics, MOKE, Kerr effect, Stoner-Wohlfarth model, magnetic anisotropy, FeRh, phase transition
Date of defence
21.06.2019
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Po otázkách oponenta bylo dále diskutováno: Vliv okolních podmínek v laboratoři na prezentovaná měření.
Language of thesis
English
Faculty
Department
Study programme
Applied Sciences in Engineering (B3A-P)
Field of study
Physical Engineering and Nanotechnology (B-FIN)
Composition of Committee
prof. RNDr. Tomáš Šikola, CSc. (předseda)
prof. RNDr. Miroslav Liška, DrSc. (místopředseda)
doc. Ing. Stanislav Průša, Ph.D. (člen)
prof. RNDr. Petr Dub, CSc. (člen)
prof. RNDr. Radim Chmelík, Ph.D. (člen)
prof. RNDr. Jiří Spousta, Ph.D. (člen)
doc. Ing. Radek Kalousek, Ph.D. (člen)
prof. RNDr. Pavel Zemánek, Ph.D. (člen)
RNDr. Antonín Fejfar, CSc. (člen)
Supervisor’s report
M.Sc. Jon Ander Arregi Uribeetxebarria, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
Ing. Lukáš Flajšman, Ph.D.
Grade proposed by reviewer: A