Master's Thesis
Spatial confinement effects in metamagnetic nanostructures
Final Thesis 10.66 MB Appendix 3.68 kBAuthor of thesis: Ing. Jiří Jaskowiec
Acad. year: 2018/2019
Supervisor: Ing. Vojtěch Uhlíř, Ph.D.
Reviewer: Mgr. Petr Klapetek, Ph.D.
Abstract:New properties and effects caused by spatial confinement of materials have critical influence in many scientific and technical fields. Reduction of device sizes, increase of recording density and increasing process efficiency are current trends in electronic industry. In this work, the influence of spatial confinement on the metamagnetic phase transition in Iron-Rhodium (FeRh) is studied. The FeRh alloy exhibits a first order phase transition from the antiferromagnetic phase to the ferromagnetic phase. Using magnetic force microscopy in an out-of-plane magnetic field the phase domain structure is imaged and analyzed across the phase transition. Quantitative analysis of measured data is done using the height-height correlation function and its results are compared for different structure sizes and thin layer thicknesses.
iron-rhodium, magnetic force microscopy, phase transition, antiferromagnetism, ferromagnetism, spatial confinement, height-height correlation function
Date of defence
18.06.2019
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Po otázkách oponenta bylo dále diskutováno: Jak jste určil nejistotu výšky profilu v měření topografie? Je výměnná interakční konstanta opravdu konstanta? Jaké metody by bylo možné použít pr opřímé měření magnetických změn?
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
Ing. Vojtěch Uhlíř, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
Mgr. Petr Klapetek, Ph.D.
Grade proposed by reviewer: A