The Knight shift of Ge and As in liquid Ge, and in liquid Ge and Ga alloys
M Durrwachter; M A Haghani; M von Hartrott; K Ott; B Sauer; D Quitmann; M Durrwachter; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany; M A Haghani; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany; M von Hartrott; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany; K Ott; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany; B Sauer; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany; D Quitmann; Inst. fur Atom- und Festkorperphys., Freie Univ., Berlin, West Germany
Журнал:
Journal of Physics: Condensed Matter
Дата:
1990-12-17
Аннотация:
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 <sup>73m</sup>As and <sup>69m</sup>Ge as probe atoms. The Knight shifts have also been measured in liquid Ga (295-1175 K), Ga<sub>0.33</sub>Ge<sub>0.66</sub> (1010-1210 K), Ge<sub>0.66</sub>Pb<sub>0.33</sub> (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 <sup>2</sup>/<sub>3</sub> of that of Ge. Non-metallic references for the Knight shift of <sup>73m</sup>As have been established in liquid GaI<sub>3</sub> (515 K) and solid GaAs (1440-1510 K); for Ge reliable reference data were available.
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