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Spectral analyzing and characterization of magnetic atoms and investigating superconducting films in low temperature STM
Cahlík, Aleš ; Jelínek,, Pavel (referee) ; Šikola, Tomáš (advisor)
This work is divided in two thematic parts. The first part shows a refurbishment of a Omicron low temperature STM set-up and its utilization for preparation of superconducting-magnetic interfaces. First, a cleaning procedure of suitable metallic substrates, specifically W(110) and Ir(111), is shown. It is followed by results of iron monolayer deposition on Ir(111) (Fe-Ir(111) interface). The last section deals with study of vanadium growth on pure Ir(111) substrate as well as on mentioned Fe-Ir(111) interface. The second thematic part deals with magnetism of cobalt atoms on a monolayer metal dichalcogenide WS2. It focuses primarily on studying their magnetic moment and magnetic anisotropy using X-ray magnetic circular dichroism (XMCD).
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Design, Fabrication and Testing of Environmental Chamber for Atomic Force Microscope and for Electronic Measurements of Nanosensors
Cahlík, Aleš ; Mach, Jindřich (referee) ; Bartošík, Miroslav (advisor)
This thesis deals with the concept of the chamber for atomic force microscope device NTegra Prima or alternatively for stand-alone measurements of nanosensors. The chamber will be used for defined modification of ambient conditions in space around measured sample. In first part, the theoretical principles of influence of ambient conditions on AFM methods are discussed. In the second chapter, the principles of graphene sensors measurements are showed. Further the reasons and requirements for designing this chamber are introduced. Main part deals with description of design. At the end the results of stress analysis and wall deflection of evacuated chamber are presented.
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Spectral analyzing and characterization of magnetic atoms and investigating superconducting films in low temperature STM
Cahlík, Aleš ; Jelínek,, Pavel (referee) ; Šikola, Tomáš (advisor)
This work is divided in two thematic parts. The first part shows a refurbishment of a Omicron low temperature STM set-up and its utilization for preparation of superconducting-magnetic interfaces. First, a cleaning procedure of suitable metallic substrates, specifically W(110) and Ir(111), is shown. It is followed by results of iron monolayer deposition on Ir(111) (Fe-Ir(111) interface). The last section deals with study of vanadium growth on pure Ir(111) substrate as well as on mentioned Fe-Ir(111) interface. The second thematic part deals with magnetism of cobalt atoms on a monolayer metal dichalcogenide WS2. It focuses primarily on studying their magnetic moment and magnetic anisotropy using X-ray magnetic circular dichroism (XMCD).
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Design, Fabrication and Testing of Environmental Chamber for Atomic Force Microscope and for Electronic Measurements of Nanosensors
Cahlík, Aleš ; Mach, Jindřich (referee) ; Bartošík, Miroslav (advisor)
This thesis deals with the concept of the chamber for atomic force microscope device NTegra Prima or alternatively for stand-alone measurements of nanosensors. The chamber will be used for defined modification of ambient conditions in space around measured sample. In first part, the theoretical principles of influence of ambient conditions on AFM methods are discussed. In the second chapter, the principles of graphene sensors measurements are showed. Further the reasons and requirements for designing this chamber are introduced. Main part deals with description of design. At the end the results of stress analysis and wall deflection of evacuated chamber are presented.
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