An investigation on the processing and characterization of (thallium(0.5 - x) lead(0.5 - x) europium(2x)) strontium(2 - y) barium(y) calcium(2) copper(3) oxygen(z) high-temperature superconductor to determine the optimum barium concentration and study the | Posted on:1997-12-18 | Degree:D.I.T | Type:Dissertation | University:University of Northern Iowa | Candidate:Ju, Zifan | Full Text:PDF | GTID:1461390014483708 | Subject:Engineering | Abstract/Summary: | | This research focused on (;Samples were prepared as precursor Sr-Ba-Ca-Cu-O first. The appropriate amount of PbO and ;From the AC susceptibility measurements, the critical temperature of the samples (Ba = 0.0 to Ba = 1.0) is between 100;Other studies of importance in this research is the doping of Europium in Tl and Pb sites. Europium being a rare-earth metal offers the possibility of magnetic studies using Mossbaur spectroscopy. This gives an unique opportunity to study the structure of TlPbSrBaCaCuO superconductor precisely. A notable observation in the Eu doping superconducting samples is the paramagnetic nature of the samples above the critical temperature. | Keywords/Search Tags: | Samples, Europium | | Related items |
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