Abstract book - phy

P-1 43
NMR Investigations of
Single-Crystalline d-Al-Ni-Co
Decagonal Quasicrystal
Matej Bobnar 1 , Peter Jeglič 1 , Martin Klanjšek 1 , Stanislav
Vrtnik 1 , Marko Jagodič 2 , Zvonko Jagličić 2 , Janez Dolinšek 1
1 J. Stefan Institute, Jamova 39, SI-1000 Ljubljana
2 IMFM, Jadranska 19, SI-1000 Ljubljana
The crystallographic-direction-dependent NMR measurements were performed
on the d-Al-Ni-Co quasicrystalline compound with composition
Al 70 Ni 20 Co 10 , by rotating the samples around the [00001] direction, a periodic
direction along which the quasiperiodic planes are stacked, and around
the [01000] and [10¯100] directions, which lie in the quasiperiodic plane
and are orthogonal to each other in the 5D hyperspace. The 27 Al NMR
rotation patterns were recorded in a magnetic field of 9.4 T. The line shapes
appear resolved and enable extraction of the electric quadrupolar and
magnetic Knight shifts, which were then reproduced by a simple model.
With the additional physical-property measurements, such as the electrical
and the thermal conductivity, the Hall coefficient, the thermoelectric power,
the heat capacity and the magnetic susceptibility, our results add to the understanding
of structural details and physical properties of the d-Al-Ni-Co
phase.