Studies of Nanoconstrictions, Nanowires and Fe3O4 Thin Films [electronic resource] : Electrical Conduction and Magnetic Properties. Fabrication by Focused Electron/Ion Beam /
Fernandez-Pacheco, Amalio.author.
This work constitutes a detailed study of electrical and magnetic properties in nanometric materials with a range of scales: atomic-sized nanoconstrictions, micro- and nanowires and thin films. Firstly, a novel method of fabricating atomic-sized constrictions in metals is presented; it relies on measuring the conduction of the device while a focused-ion-beam etching process is in progress. Secondly, it describes wires created by a very promising nanolithography technique: Focused electron/ion-beam-induced deposition. Three different gas precursors were used: (CH₃)₃Pt(CpCH₃), W(CO)₆ and Co₂(CO)₈. The thesis reports the results obtained for various physical phenomena: the metal-insulator transition, superconducting and magnetic properties, respectively. Finally, the detailed magnetotransport properties in epitaxial Fe₃O₄ thin films grown on MgO (001) are presented. Overall, the new approaches developed in this thesis have great potential for supporting novel technologies.
Description based upon print version of record.
Doctoral thesis accepted by University of Zaragoza, Spain.
Includes bibliographical references.
Introduction -- Experimental Techniques -- Magnetotransport Properties of Epitaxial Fe3O4 thin Films -- Conduction in in Atomic-Sized Magnetic Metallic Constructions created by FIB -- Pt-C Nanowires created by FIBID and FEBID -- Superconductor W-Based Nanowires created by FIBID -- Magnetic Cobalt Nanowires created by FEBID -- Conclusions and Outlook -- CV.
This work constitutes a detailed study of electrical and magnetic properties in nanometric materials with a range of scales: atomic-sized nanoconstrictions, micro- and nanowires and thin films. Firstly, a novel method of fabricating atomic-sized constrictions in metals is presented; it relies on measuring the conduction of the device while a focused-ion-beam etching process is in progress. Secondly, it describes wires created by a very promising nanolithography technique: Focused electron/ion-beam-induced deposition. Three different gas precursors were used: (CH₃)₃Pt(CpCH₃), W(CO)₆ and Co₂(CO)₈. The thesis reports the results obtained for various physical phenomena: the metal-insulator transition, superconducting and magnetic properties, respectively. Finally, the detailed magnetotransport properties in epitaxial Fe₃O₄ thin films grown on MgO (001) are presented. Overall, the new approaches developed in this thesis have great potential for supporting novel technologies.
Nanotechnology.
Nanoscale science.
Nanoscience.
Nanostructures.
Surfaces (Physics).
Interfaces (Physical sciences).
Thin films.
Nanotechnology.
Nanoscale Science and Technology.
Surface and Interface Science, Thin Films.