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Analysis of Gas Phase Clusters Made from Laser-Vaporized Icosahedral Al-Pd-Mn

Published online by Cambridge University Press:  17 March 2011

J.A. Barrow ,
E.F. Rexer ,
D.J. Sordelet ,
M.F. Besser ,
C.J. Jenks ,
S.J. Riley  and
P.A. Thiel
J.A. Barrow
Affiliation:
Ames Laboratory and Department of Chemistry, Iowa State University, Ames, IA 50011
E.F. Rexer
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL, 60439
D.J. Sordelet
Affiliation:
Ames Laboratory and Department of Chemistry, Iowa State University, Ames, IA 50011
M.F. Besser
Affiliation:
Ames Laboratory and Department of Chemistry, Iowa State University, Ames, IA 50011
C.J. Jenks
Affiliation:
Ames Laboratory and Department of Chemistry, Iowa State University, Ames, IA 50011
S.J. Riley
Affiliation:
Chemistry Division, Argonne National Laboratory, Argonne, IL, 60439
P.A. Thiel
Affiliation:
Ames Laboratory and Department of Chemistry, Iowa State University, Ames, IA 50011
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Abstract

Laser vaporization of an icosahedral Al-Pd-Mn sample with detection by time-of-flight mass spectrometry is used to probe metal clusters made from the alloy. After sample vaporization, clusters form by gas aggregation and may contain several to hundreds of atoms. Multi-photon ionization/fragmentation of these clusters yields mass spectra showing many cluster sizes with enhanced intensity. Clusters are identified at masses near those of pseudo- Mackay and Bergman clusters; however, these clusters do not appear special relative to neighboring clusters. Results of this study and its relationship to the proposed cluster structures in quasicrystalline materials are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 643: Symposium K – Quasicrystals-Preparation, Properties, and Applications , 2000 , K5.4
Copyright
Copyright © Materials Research Society 2001

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