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The lattice dielectric constant in Bi 100– x Sb x as a function of x
Author(s) -
Oelgart G.,
Herrmann R.,
Meschter U.
Publication year - 1977
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220830220
Subject(s) - dielectric , bismuth , antimony , condensed matter physics , lattice constant , materials science , displacement current , perpendicular , lattice (music) , magnetic field , optics , physics , current (fluid) , optoelectronics , diffraction , geometry , mathematics , quantum mechanics , acoustics , metallurgy , thermodynamics
The dielectric constant of the lattice, ε 1 , is determined in semiconductive bismuth–antimony alloys (7 at% < x < 22 at%). For measuring ε 1 the effect of the displacement current on the wave propagation in a direction parallel and perpendicular to the magnetic field is utilized. The measurements are carried out at helium temperatures and within a frequency range from 9 to 70 GHz. Thus the effect of the displacement current can be experimentally separated. The dielectric constant exhibits a strong dependence on x , which indicates a pole for the disappearing gap.