Electric Quadrupole Interaction at 181Ta in Isostructural Orthorhombic Cu8Hf3 and Cu8Zr3 Compounds
Abstract
The quadrupole interaction of 181Ta probes in isostructural Cu8Hf3 and Cu8Zr3 intermetallic compounds was studied in the temperature range 24 K -1100 K with the time-differential perturbed angular correlation technique. Two nonaxial electric field gradients corresponding to two nonequiv-alent hafnium or zirconium sites in the investigated structure were found. A linear decrease in the quadrupole interaction frequency with increase of temperature for the 8(d) sites was evidenced, while the vQ(T) dependence for the 4(c) sites is weaker and has a T3/2 character.
- Publication:
-
Zeitschrift Naturforschung Teil A
- Pub Date:
- July 1998
- DOI:
- 10.1515/zna-1998-6-715
- Bibcode:
- 1998ZNatA..53..355W
- Keywords:
-
- Hyperfine Interactions;
- Perturbed Angular Correlations;
- EFG;
- Intermetallic Compounds;
- Cu-Hf and Cu-Zr Systems