TY - JOUR
T1 - Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap
AU - Whall, T.E.
AU - Yeung, K.K.
AU - Proykova, Y.G.
AU - Brabers, V.A.M.
PY - 1986
Y1 - 1986
N2 - Electrical conductivity and thermoelectric power measurements have been made on single crystals of nickel ferrous ferrite, NixFe3-xO4 of compositions 0x0·9, in the temperature range 10 to 300 K. The temperature and concentration dependences of the conductivity and of the thermopower at high nickel concentrations (x 0·4) are discussed in terms of variable-range hopping and of nearest-neighbour hopping in an energy distribution of localized states, or the 'Anderson band'. It is argued that there is evidence for the formation of a Coulomb gap and for many-electron hopping in samples of low nickel content (x
AB - Electrical conductivity and thermoelectric power measurements have been made on single crystals of nickel ferrous ferrite, NixFe3-xO4 of compositions 0x0·9, in the temperature range 10 to 300 K. The temperature and concentration dependences of the conductivity and of the thermopower at high nickel concentrations (x 0·4) are discussed in terms of variable-range hopping and of nearest-neighbour hopping in an energy distribution of localized states, or the 'Anderson band'. It is argued that there is evidence for the formation of a Coulomb gap and for many-electron hopping in samples of low nickel content (x
U2 - 10.1080/13642818608236866
DO - 10.1080/13642818608236866
M3 - Article
SN - 1364-2812
VL - 54
SP - 505
EP - 521
JO - Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties
JF - Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties
IS - 6
ER -