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Wednesday, April 22 • 2:30pm - 4:30pm
Superefficient Power Transmission with High Temperature Superconduction

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Development of practical materials for the purpose of transmitting electricity without resistance is problematic. The solid structure properties that support superconductivity are not well understood. One school of thought relates superconductivity to a status of magnetic ordering within layers of the crystal lattice. The recently discovered high temperature superconductor BaFe2As2 is interesting because it contains iron, which is known to have strong natural magnetic properties that ordinarily destroy superconductivity. BaFe2As2 is also curious in that it demonstrates superconductivity when altered by electron enrichment but, it is not a superconducting material without such alteration. BaFe2As2 undergoes changes in its crystal lattice structure when its temperature is lowered below 140 K. Below this structural change point it has been observed to have magnetic orderings which have been difficult to determine. The following research project will attempt to elucidate the magnetic order states of BaFe2As2 for a contribution to the understanding of high temperature superconductivity. The previously obtained Mossbauer spectra of crystalline BaFe2As2 below 140 K demonstrated a convoluted spectrum, thus does not provide a clear image of what the magnetic ordering states are. We will attempt to de-convolute the spectra by subtracting a spectrum of powdered material from the crystal material.

Wednesday April 22, 2015 2:30pm - 4:30pm PDT
Wilma Sherrill Center Grimes Atrium