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Sub-millisecond Te-125 NMR spin-lattice relaxation times and large Knight shifts in complex tellurides: Validation of a quadratic relation across the spectrum

TitleSub-millisecond Te-125 NMR spin-lattice relaxation times and large Knight shifts in complex tellurides: Validation of a quadratic relation across the spectrum
Publication TypeJournal Article
Year of Publication2016
AuthorsLevin, EM, Cui, JF, Schmidt-Rohr, K
JournalSolid State Nuclear Magnetic Resonance
Volume78
Pagination40-44
Date Published09
Type of ArticleArticle
ISBN Number0926-2040
Accession NumberWOS:000384518300007
Keywordsalloys, chemistry, Complex tellurides, germanium telluride, gete, Knight shift, Korringa relation, phase-change materials, physics, Spectroscopy, spin-lattice relaxation, Te-125 NMR
Abstract

= 4500 ppm and a T-1 of only 0.3 ms, indicating a high hole concentration that could correspond to close to 50% vacancies on the Ge sublattice in this component. Our findings provide a basis for determining the charge carrier concentration and its distribution in complex thermoelectric and phase-change tellurides, which should lead to a better understanding of electronic and thermal transport properties as well as chemical bonding in these materials. (C) 2016 Elsevier Inc. All rights reserved.

DOI10.1016/j.ssnmr.2016.07.003
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Alternate JournalSolid State Nucl. Magn. Reson.