Al27 NMR measurements were performed on the D 023 -structure trialuminides Al3 Zr and Al3 Hf. The Knight shifts, quadrupole splittings, and spin-lattice relaxation times for each of the three crystallographic sites have been resolved. Universally small Fermi-contact Knight shifts and long relaxation times are found for both alloys. Results provide a measure of s -character Fermi-level density of states Ns (EF) and an indication of orbital weights. In addition, there is evidence that Ns (EF) correlates with the structural stability of the studied materials. Our NMR measurements confirm that Al3 Zr is more stable than Al3 Hf with respect to the D 023 structure.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2005 Dec 13|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics