HALL-EFFECT OF ACCEPTOR INTERCALATION COMPOUNDS IN STAGES 1-3

The Hall effect of the stage-1 InCl3, the stage-2 BiCl3 and the stage- 3 HgCl2 graphite intercalation compounds (GICs) was measured at temper atures between 4.2 and 300 K. The Hall coefficient for these compounds and the stage-1 CdCl2 and the stage-2 HgCl2 GIC reported previously i s between 6.8 and 8.6 x 10(-9) m(3) C-1 and is independent of temperat ure to within experimental uncertainty. It is essentially independent of stage number and intercalant species. The charge density within the Fermi surface calculated from the de Haas-van Alphen effect data is l arger than the carrier density derived from the Hall coefficient and c annot be used to explain the carrier density. (C) 1998 Elsevier Scienc e Ltd. All rights reserved.