Liknande böcker
Gmr and Thermoelectrics Nanostructures Electrodeposition : ELECTRODEPOSITION OF MULTILAYERED NANOSTRUCTURES FOR GIANT MAGNETORESISTANCE AND THERMOELECTRIC APPLICATIONS
Bok av Despina Davis
The electrodeposition of novel materials
such as CoNiFeCu multilayer nanowires for Giant Magneto
Resistance (GMR)and Bismuth Telluride nanotubes for
thermoelectric applications are presented in this work. The
nanowire high aspect ratio geometry allows the measurement
of GMR with the current applied perpendicular to the plane
(CPP) of the multilayers, which has been theoretically
identified as being larger than the GMR in the (CIP)
configuration (current in plane of multilayers)in thin
films. Electrodeposited multilayer CoNiFeCu/Cu nanowires
and nanotubes were fabricated by pulsed applied electric
potential. The effect of electrolyte concentration on GMR
was investigated. The FeSO4, CoSO4 and NiSO4 concentrations
were varied to optimize GMR. Nanolayer thicknesses were
controlled and varied for commercially viable GMR results.
Micro fluidic magnetic nanoparticles sensors based on
CoNiFeCu/Cu GMR nanowires were demonstrated. For
thermoelectric applications nanotubes of bismuth- telluride
(Bi2Te3) were fabricated and their Seebeck coefficients
were reported.