Master's Thesis
Magnetic spin ice states in artificial magnetic frustrated systems
Final Thesis 3.74 MB Appendix 1.08 MBAuthor of thesis: Ing. Vojtěch Schánilec, Ph.D.
Acad. year: 2017/2018
Supervisor: Nicolas Rougemaille
Reviewer: Ing. Aleš Hrabec, Ph.D.
Abstract:Artificial spin-ice systems are an appropriate tool for exploring unusual phenomena that are hard to observe in nature. A special case of artificial spin ice system is a kagome lattice that allows you to examine the collective behaviour of spin in the matter. This system has a number of predicted exotic magnetic phases that have not yet been measured and investigated in real space. In this work, we deal with the modification of the kagome lattice so that it can be used to study exotic states in real space. Experiments performed on our modified lattice indicate that we are able to detect both low and high energy states, and therefore the proposed modification of the kagome lattice is suitable for exploring its exotic states in real space.
geometrical frustration, artificial spin ice systems, kagome lattice, low energy states, micromagnetism, fragmentation, magnetic force microscopy
Date of defence
19.06.2018
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Jak závisí magnetizace struktury na její velikosti v rozsahu nanometrových do mikrometrových struktur? Jaká bude pravděpodobnost natočení jedné struktury vložené do magnetického pole při nějaké teplotě?
Language of thesis
English
Faculty
Department
Study programme
Applied Sciences in Engineering (M2A-P)
Field of study
Physical Engineering and Nanotechnology (M-FIN)
Composition of Committee
prof. RNDr. Tomáš Šikola, CSc. (předseda)
prof. RNDr. Miroslav Liška, DrSc. (místopředseda)
prof. RNDr. Bohumila Lencová, CSc. (člen)
prof. RNDr. Jiří Komrska, CSc. (člen)
prof. RNDr. Petr Dub, CSc. (člen)
prof. RNDr. Radim Chmelík, Ph.D. (člen)
prof. RNDr. Jiří Spousta, Ph.D. (člen)
prof. RNDr. Eduard Schmidt, CSc. (člen)
prof. RNDr. Pavel Zemánek, Ph.D. (člen)
RNDr. Antonín Fejfar, CSc. (člen)
doc. Ing. Radek Kalousek, Ph.D. (člen)
Supervisor’s report
Nicolas Rougemaille
Grade proposed by supervisor: A
Reviewer’s report
Ing. Aleš Hrabec, Ph.D.
Grade proposed by reviewer: A