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.
| Original language | English |
|---|---|
| Pages (from-to) | K541-K545 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 643 |
| State | Published - 2001 |
| Externally published | Yes |
Funding
This work is supported by the U. S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences under Contract No.W-405-Eng-82 (Ames Laboratory) and the Division of Chemical Sciences under Contract No.W-31-109-Eng-38 (Argonne National Laboratory).