Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume 21, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/21/11/115022
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- AFOSR
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Tungsten trioxide, WO(3-y), infiltrated into various nanoporous matrix structures such as carbon inverse opal, carbon nanotube paper or platinum sponge, and then intercalated with alkaline ions (Li(+), Na(+)) exhibits a pronounced diamagnetic onset in ZFC magnetization in a wide range of temperatures, 125-132 K. Resistivity measurements show nonzero jump and intensive fluctuations of electrical resistance below observed transition points. The observed magnetic and electrical anomalies in nanostructured tungsten bronzes (Li(x)WO(3-y) and Na(x)WO(3-y)) suggest the possibility of localized non-percolated superconductivity.
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