Bachelor's Thesis
Design of the device for magnetodynamic characterization of magnetic materials and nanostructures
Final Thesis 3.68 MBAuthor of thesis: Ing. Václav Roučka
Acad. year: 2018/2019
Supervisor: Ing. Igor Turčan, Ph.D.
Reviewer: Ing. Marek Vaňatka, Ph.D.
Abstract:Further development of magnonics, the field of study dealing with the phenomenon of spin waves, is connected to the research of novel materials and structures with useful magnetodynamic properties. One of the possible experimental techniques used to quantify these properties is the measurement of ferromagnetic resonance using vector network analyzer. This experimental technique is being dealt with in the presented bachelor thesis. At the beginning we shortly introduce the theoretical foundations of magnetization dynamics and the propagation of electromagnetic waves in microwave circuits. Then we describe the individual devices of the experimental apparatus and its overall design. Function of the device is demonstrated on a measurement of ferromagnetic resonance of a permalloy sample. Acquired data is processed using the methods mentioned in this thesis and at the end we present the resulting magnetodynamic properties of permalloy.
Ferromagnetic resonance, vector network analyzer, S-parameters, dynamic susceptibility, magnonics
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: Vlivy parazitních signálů (např. niklu) na naměřená data.
Language of thesis
Czech
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
Ing. Igor Turčan, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
Ing. Marek Vaňatka, Ph.D.
Grade proposed by reviewer: A