ENGLISH

Studies of Nanoconstrictions, Nanowires and Fe₃O₄ Thin Films: Electrical Conduction and Magnetic Properties. Fabrication by Focused Electron/Ion Beam

By Amalio Fernandez-Pacheco (auth.)

Book information

Publisher
Springer-Verlag Berlin Heidelberg
Year
2011
ISBN
3642158005, 9783642158001
DOI
10.1007/978-3-642-15801-8
Language
english
Format
PDF
Filesize
5 MB (5659219 bytes)
Series
Springer Theses
Edition
1
Pages
188\205
Topic
Education
Time added
2011-06-04 13:46:07
Nanotechnology;Nanoscale Science and Technology;SuThin Films

Description

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.

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