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Title:Nuclear magnetic resonance study of quantum size effects in supported platinum particles
Author(s):Durand, Dale James
Doctoral Committee Chair(s):Slichter, C.P.
Department / Program:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Condensed Matter
Abstract:The author has observed, and studied quantum size effects in the NMR of small, supported platinum particles with a monolayer of carbon monoxide chemically adsorbed to the surface. The effects are observed in the $\sp{13}$C and $\sp{195}$Pt NMR, primarily at 4.2K. He reports nonmetallic spin-lattice relaxation, and changes in the Knight shift at low temperatures.
He shows that the variation of the quantum size effects at 4.2K with particle size is consistent with a prediction based on simply scaling the bulk density of states at the Fermi energy with the volume of the particles. An interpretation is proposed based on the relative sizes of the electron Zeeman energy and the level spacing of particular particles.
Issue Date:1989
Rights Information:Copyright 1989 Durand, Dale James
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI8924809
OCLC Identifier:(UMI)AAI8924809

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