Journal or Book Title
The Journal of Physical Chemistry A
An icosahedral Al−Pd−Mn quasicrystal sample is laser vaporized to form metal clusters by gas aggregation. The clusters are subsequently laser ionized and mass analyzed in a time-of-flight mass spectrometer. The mass spectra show cluster compositions which are qualitatively similar to that of the sample. This is consistent with a kinetically controlled cluster growth process. Cluster thermodynamic stability is probed by multiphoton ionization/fragmentation, which induces primarily Al and Mn loss. The resulting spectra are composed of a series of Pd-rich Al−Pd clusters. The average cluster composition is 60 (±1)% Pd. This composition is close to a known eutectic in the Al−Pd system. When manganese is seen on these clusters, it is always in units of Mn3. These results are discussed in terms of relative binding strengths in the Al−Pd−Mn alloy system.
American Chemical Society
Barrow, J. A.; Sordelet, D. J.; Besser, Matthew F.; Jenks, Cynthia J.; Thiel, Patricia A.; Rexer, E. F.; and Riley, S. J., "Analysis of Gas-Phase Clusters Made from Laser-Vaporized Icosahedral Al−Pd−Mn" (2002). Chemistry Publications. 37.