Electronic Resource
Springer
The European physical journal
267 (1974), S. 61-70
ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Investigations of anisotropic Debye-Waller factors have been carried out mainly using the M1-transitions of57Fe and119Sn. For this case the theory of the Goldanskii Karyagin effect is well established. Mössbauer studies of electric quadrupole interactions in hafnium and tungsten compounds made it necessary to extend the theory to the more complex case of E2-transitions. As the investigated compounds show a strong axial anisotropy of the electric field gradient, a similar behaviour has to be expected in principle for the tensor of the mean-square displacements, which determines the Debye-Waller factor immediately. A fitting procedure taking into account an axial asymmetric Debye Waller factor is worked out and applied to measurements performed with several complex hafnium and tungsten fluorine compounds. With NaWO2F3 the quadrupole interactions of182W,183W, and184W have been measured yieldingQ 5/2+(183W)/Q 2+(182W)=0-86(6) andQ 2+(184W)/Q 2+(182W)=0.955 (3).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01680363
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