Letter to the Editor
Orientation-dependent NMR spectra of a single-grain icosahedral Al-Pd-Mn quasicrystal
M. Klanjšek
; J. Stefan Institute, Jamova 39, SLO-1000 Ljubljana, Slovenia
T. Apih
; J. Stefan Institute, Jamova 39, SLO-1000 Ljubljana, Slovenia
J. Dolinšek
; J. Stefan Institute, Jamova 39, SLO-1000 Ljubljana, Slovenia
Abstract
Orientation-dependent 27Al quadrupole-perturbed NMR spectra of a single-grain Al72.4Pd20.5Mn7.1 icosahedral quasicrystal are reported. The dependence on orientation is a consequence of a spatially anisotropic distribution of orientations of the electric field gradient tensor at the inequivalent lattice sites. The results demonstrate that the NMR spectra of quasicrystalline single-grain samples of a macroscopic symmetry as high as icosahedral are orientation-dependent and differ from the orientation-independent spectra of powder samples, in contrast to previous reports.
Keywords
icosahedral quasicrystal; Al72.4Pd20.5Mn7.1; single-grain; 27Al quadrupole-perturbed NMR spectra; dependence on orientation
Hrčak ID:
300962
URI
Publication date:
1.7.1999.
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