Nuclear magnetic resonance study of quantum size effects in supported platinum particles

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 13c and 195pt 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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2011

Author dc:creator

• Durand, Dale James

Contributors dc:contributor

• Slichter, C.P.

• Nuclear magnetic resonance (NMR)
• quantum size effects
• supported platinum particles
• carbon monoxide monolayer
• nonmetallic spin-lattice relaxation
• Knight shift

Statement dc:rights

• 1989 Dale James Durand

Language dc:language

en

Identifier

1854055

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23943