Abstract
The structure and dynamics of lattice defects in copper are investigated. The defects have been produced by irradiation with heavy ions of 350 keV between 85 K and 300 K. Three different defect configurations are distinguished by the time differential perturbed angular correlation technique (DPAC) with111In as radioactive probe. Their electric quadrupole coupling constantsν Q =e 2 Qq zz /h areν Q1=116(2)MHz,ν Q2=181(3)MHz andν Q3=52(1)MHz. The defects characterized byν Q1 andν Q2 are observed in the temperature range of recovery stage III. The appearance ofν Q3 is closely correlated with recovery stage V. The symmetry axis of the electric field gradient associated with this defect-111In configuration points along a crystallographic 〈111〉 direction. We attribute this defect to a planar faulted loop, presumably of vacancy type. The influence of irradiating particles and dose on the defect configurations is analyzed.
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Echt, O., Recknagel, E., Weidinger, A. et al. Impurity-defect configurations in ion-irradiated copper studied by the DPAC-technique with111In. Z Physik B 32, 59–66 (1978). https://doi.org/10.1007/BF01322187
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DOI: https://doi.org/10.1007/BF01322187