Pismo uredniku

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

Sažetak

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.

Ključne riječi

icosahedral quasicrystal; Al72.4Pd20.5Mn7.1; single-grain; 27Al quadrupole-perturbed NMR spectra; dependence on orientation

Hrčak ID:

300962

URI

https://hrcak.srce.hr/300962

Datum izdavanja:

1.7.1999.

Podaci na drugim jezicima: hrvatski

Posjeta: 555 *