Graduation Year
2006
Document Type
Thesis
Degree
M.A.
Degree Granting Department
Physics
Major Professor
Srikanth Hariharan, Ph.D.
Keywords
PLD, Magnetite, Verwey, M-H loops, Magneto-resistance, IV
Abstract
This project focused on two aspects of magnetite thin films. The first was to find optimum parameters and conditions for deposition of stoichiometeric Magnetite films using pulsed laser deposition (PLD). The second aspect was the characterization of the magnetic and electrical properties in order to broaden the spectrum of understanding of PLD Magnetite films. These properties were also investigated in terms of the substrates on which the films were deposited. Discussed in this thesis are deposition parameters, structural characteristics, magnetic and electrical characteristics of the films in terms of different substrates and film thicknesses. The discussion consists of structural parameters obtained using X- ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), and electric properties such as resistance as a function of temperature and voltage dependence on the applied current. The magnetic properties measured were the magneto-resistance, M-H hysteresis loop, and magnetization as a function of temperature. The results obtained are then compared with pre-existing literature data. It will be shown that there is an impurity phase that may be seen when magnetite films are deposited on Sillicon dioxide substrates.
Scholar Commons Citation
Siyambalapitiya, Chamila S., "Growth and physical properties of magnetite thin films" (2006). USF Tampa Graduate Theses and Dissertations.
https://digitalcommons.usf.edu/etd/2705
