I. An oxygen-17 NMR study on oxygen exchange in yttrium barium(2) copper(3) oxygen(7-x). II. Synthesis of transition metal polysulfide complexes from metal powders

Covellite, $\rm Cu\sp{I}\sb2(S\sb2)Cu\sp{II}S$ (T$\sb{\rm c}$ = 1.66 K) and \rm YBa\sb2Cu\sp{II}\sb2Cu\sp{III}O\sb{7-x} (T\sb{c} = 92 K) are similar in that both are superconductors containing layered structures and mixed valent copper centers. Our studies on YBa$\sb2$Cu$\sb3$O$\sb{\rm 7-x}$ focused on $\sp{17}$O-labelling of samples of $\rm YBa\sb2 Cu\sb3 O\sb{7-x}$ and the $\sp{17}$O NMR studies of these samples. The $\sp{17}$O-labelling process was carried out using a specially designed glass apparatus. Powder X-ray diffraction and magnetic susceptibility measurements showed that our samples were highly pure. $\sp{17}$O NMR spectroscopy showed that we were able to prepare samples which have uniform and non-uniform distribution of $\sp{17}$O atoms.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Ramli, Emannuel

Contributors dc:contributor

• Rauchfuss, Thomas B.

• Chemistry, Inorganic

Statement dc:rights

• Copyright 1991 Ramli, Emannuel

Language dc:language

eng

Identifier

AAI9124471
(UMI)AAI9124471

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21567