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Bachelor's Thesis
Author of thesis: Ing. Kristýna Davídková
Acad. year: 2020/2021
Supervisor: Ing. Michal Urbánek, Ph.D.
Reviewer: Ing. Jakub Holobrádek
The transmission and processing of information could be carried out by utilizing spin waves in the future. Using the possibility of encoding information into the amplitude and wave phase would lead to the acceleration of complex mathematical operations, while for their efficiency it is necessary to work with spin waves in the exchange mode, which are characterized by a short wavelength. However, exchange mode spin waves are not so easy to generate. This bachelor thesis deals with the generation and detection of exchange spin waves, which is performed using lithographically fabricated nanoantennas on the surface of an iron-yttrium garnet magnetic layer. The bachelor thesis also contains analytical calculations of excitation spectra of the generated nanoantennas of different shapes and sizes, whose model is verified by simulations and experiment.
Magnonics, exchange spin waves, dispersion relation, excitation spectrum, self and mutual inductance, Vector network analyzer, nanoantennas.
Date of defence
17.06.2021
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Po otázkách oponenta bylo diskutováno: simulace magnetického pole antén výhody magnoniky oproti fotonice Studentka na otázky odpověděla
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Institute of Physical Engineering
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) prof. RNDr. Bohumila Lencová, CSc. (člen) 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) RNDr. Antonín Fejfar, CSc. (člen)
Supervisor’s reportIng. Michal Urbánek, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportIng. Jakub Holobrádek
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová