Abstract
Results of Extended X-Ray Absorption Fine Structure (EXAFS) studies of aperiodic alloys of AlMn and related alloys are summarized. By comparing the EXAFS of icosahedral AlMnSi and AlMn with that of α(AlMnSi), it was found that Mn icosahedra of edge length ti 5 Å are the structure units in the icosahedral phase. The connection among these icosahedral units is different from the connection in the a phase. Comparing the Fe and Mn sites in icosahedral AlMnFeSi and decagonal AlMnFe, indicates that Fe and Mn occupy the same sites in the icosahedral phase but different sites in the decagonal phase. We discuss these results in terms of the randomly connected icosahedra model (RCI) proposed for the icosahedral phase.
| Original language | English |
|---|---|
| Pages (from-to) | 52-57 |
| Number of pages | 6 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 690 |
| DOIs | |
| State | Published - 12 Aug 1986 |
| Externally published | Yes |
Bibliographical note
Funding Information:The samples used in this experiment were kindly supplied by D. Shechtman, R.J. Schaefer, and F.S. Biancaniello of the National Bureau of Standards. We are most appreciative of discussions with J.W. Cahn. Measurements were made on beamline X-11 at the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Material Sciences and Division of Chemical Sciences. We are appreciative of C. Bouldin's help with the measurements. The research was supported partially by U.S. Department of Energy under contract number DE-A505-80-ER10742.
Funding
The samples used in this experiment were kindly supplied by D. Shechtman, R.J. Schaefer, and F.S. Biancaniello of the National Bureau of Standards. We are most appreciative of discussions with J.W. Cahn. Measurements were made on beamline X-11 at the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Material Sciences and Division of Chemical Sciences. We are appreciative of C. Bouldin's help with the measurements. The research was supported partially by U.S. Department of Energy under contract number DE-A505-80-ER10742.
| Funders | Funder number |
|---|---|
| Division of Chemical Sciences | DE-A505-80-ER10742 |
| National Synchrotron Light Source | |
| U.S. Department of Energy | |
| Brookhaven National Laboratory | |
| Division of Materials Sciences and Engineering |