Mechanical Synthesis and Characterization of Fe doped CuO
Research Mentor(s)
Seda, Takele
Description
Copper oxide materials are non-toxic and abundant, and nanoparticles of these materials have properties that can potentially be used in Magnetic Tunneling Junctions for spintronics applications. In this paper, we synthesize CuO nanoparticles doped with various wt. % amounts of Fe using High Energy Ball Milling. The size and composition of the particles are then characterized with X-Ray Diffraction, and their magnetic properties are investigated using room temperature Mossbauer Spectroscopy. It was found that most size reduction occurred within the first two hours of milling, and continued milling induced changes to the lattice structure. Mossbauer analysis found that ferromagnetic phases were still present in all samples, however longer milling times substantially increased the amount of nano-sized particles with super-paramagnetic properties. We conclude that ball milling produces nanoparticles with a large size distribution, the majority of which exhibit no ferromagnetic properties. Future work may involve exploring low temperature Mossbauer behaviors, and an investigation of the sample’s magnetic properties using Vibrating Sample Magnetometry.
Document Type
Event
Start Date
14-5-2015 10:00 AM
End Date
14-5-2015 2:00 PM
Department
Physics/Astronomy
Genre/Form
student projects; posters
Subjects – Topical (LCSH)
Mössbauer spectroscopy; Mössbauer effect
Type
Image
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this documentation for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.
Language
English
Format
application/pdf
Mechanical Synthesis and Characterization of Fe doped CuO
Copper oxide materials are non-toxic and abundant, and nanoparticles of these materials have properties that can potentially be used in Magnetic Tunneling Junctions for spintronics applications. In this paper, we synthesize CuO nanoparticles doped with various wt. % amounts of Fe using High Energy Ball Milling. The size and composition of the particles are then characterized with X-Ray Diffraction, and their magnetic properties are investigated using room temperature Mossbauer Spectroscopy. It was found that most size reduction occurred within the first two hours of milling, and continued milling induced changes to the lattice structure. Mossbauer analysis found that ferromagnetic phases were still present in all samples, however longer milling times substantially increased the amount of nano-sized particles with super-paramagnetic properties. We conclude that ball milling produces nanoparticles with a large size distribution, the majority of which exhibit no ferromagnetic properties. Future work may involve exploring low temperature Mossbauer behaviors, and an investigation of the sample’s magnetic properties using Vibrating Sample Magnetometry.