ISSN:
1434-6036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The electric fieldgradient of the transition element impurities57Fe,99Ru,197Au in Sc and193Ir in Be has been determined by Mössbauer measurements. The following values were obtained: (+)4.06(9)⋅1017 V/cm2 for57Fe in Sc, ±19.2(4.1)⋅1017 V/cm2 for99Ru in Sc, ±11.6(4)⋅1017 V/cm2 for197Au in Sc, and ±6.4(1.5)⋅1017 V/cm2 for193Ir in Be. The results for57Fe,99Ru and197Au in Sc are incompatible with the universal correlation between the electronic and the ionic fieldgradient observed in numerous other metals. The data suggest, that a strong contribution to the electric fieldgradient arises from electrons localized at the impurity, if the host is a transition metal and the impurity belongs to the second half of a transition series.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01323036
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