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Magnetic Properties of Single Crystals of Bismuth Telluride Doped with 0.2 at% Lead and Its Thermoelectric Power
Author(s) -
Biswas S.,
Bhattacharya R.
Publication year - 1990
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.2221590233
Subject(s) - diamagnetism , seebeck coefficient , bismuth , thermoelectric effect , condensed matter physics , doping , materials science , bismuth telluride , effective mass (spring–mass system) , magnetic field , thermodynamics , physics , metallurgy , quantum mechanics
At temperatures above 200 K the diamagnetic susceptibility of Bi 2 Te 3 doped with 0.2 at% Pb decreases with rising temperature which cannot be accounted for by the change in the diamagnetic contribution of the free carriers present in the substance. It is shown that this decrease can be accounted for if χ L (diamagnetic contribution of core and valence electrons) decreases with temperature. The thermoelectric power is measured to determine the effective mass of carriers.