Abstract
The Knight shifts of As and Ge in liquid Ge have been determined by TDPAD (time-differential perturbed angular distribution) measurements over a temperature range of 1210-1370 K, using the isomeric nuclei 73mAs and 69mGe as probe atoms. The Knight shifts have also been measured in liquid Ga (295-1175 K), Ga0.33Ge0.66 (1010-1210 K), Ge0.66Pb0.33 (1170-1215 K) and GaSb (975-1135 K). For both As and Ge the shifts are essentially metallic in these matrices. However, even in definitely metallic conditions for As, the shift is only about 2/3 of that of Ge. Non-metallic references for the Knight shift of 73mAs have been established in liquid GaI3 (515 K) and solid GaAs (1440-1510 K); for Ge reliable reference data were available.
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