| Bio | 
| Paper |
Anamaris Zambrana
University of Puerto Rico at Humacao
Subject Listing - Physics/Astronomy
Advisor: Profa. Idalia Ramos
Friday, Poster Session 4, Presentation Kiosk 35 B, Health & Fitness Center
ELECTRONIC TRANSPORT PROPERTIES OF TIN OXIDE NANOFIBERS
SnO2 fibers were synthesized using electrospinning followed by subsequent heat treatment at 600°C. Results presented in NCUR 2005 showed that tin oxide nanofibers in the rutile structure are obtained with this technique. In the current research, the conductivity of a single fiber was measured at temperatures between 2 and 15K with a transverse magnetic field varying continuously between -9T and 9T. The measurements were done using a Quantum Model 6000 Physical Properties Measurement System with a Keithley 237 High Voltage Source. The values were used to calculate the magnetoresistance, mobility and carrier concentration of the fiber. The results show small magnetoresistance values with a maximum of 2.36% at T=15K and B=9T. The values obtained for the mobility are between 120 and 169 cm2/(V.s) and approximately 1015/cm3 for the carrier concentration. The mobility and the carrier concentration results show that the tin oxide fiber is non-degenerate.
Advisor: Profa. Idalia Ramos, Associate Professor, Physics and Electronics, University of Puerto Rico at Humacao, Humacao, Puerto Rico