Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap

T.E. Whall; K.K. Yeung; Y.G. Proykova; V.A.M. Brabers

doi:10.1080/13642818608236866

Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap

T.E. Whall
, K.K. Yeung
, Y.G. Proykova
, V.A.M. Brabers

Physics of Nanostructures

Research output: Contribution to journal › Article › Academic › peer-review

22 Citations (Scopus)

Abstract

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

Original language	English
Pages (from-to)	505-521
Number of pages	17
Journal	Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties
Volume	54
Issue number	6
DOIs	https://doi.org/10.1080/13642818608236866
Publication status	Published - 1986

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10.1080/13642818608236866

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Whall, T. E., Yeung, K. K., Proykova, Y. G., & Brabers, V. A. M. (1986). Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap. Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties, 54(6), 505-521. https://doi.org/10.1080/13642818608236866

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abstract = "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",

author = "T.E. Whall and K.K. Yeung and Y.G. Proykova and V.A.M. Brabers",

year = "1986",

doi = "10.1080/13642818608236866",

language = "English",

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pages = "505--521",

journal = "Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties",

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Whall, TE, Yeung, KK, Proykova, YG & Brabers, VAM 1986, 'Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap', Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties, vol. 54, no. 6, pp. 505-521. https://doi.org/10.1080/13642818608236866

Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap. / Whall, T.E.; Yeung, K.K.; Proykova, Y.G. et al.
In: Philosophical Magazine B : physics of condensed matter, statistical mechanics, electronic, optical and magnetic properties, Vol. 54, No. 6, 1986, p. 505-521.

Research output: Contribution to journal › Article › Academic › peer-review

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 -

Electrical conductivity and thermoelectric power of nickel ferrous ferrite. Variable-range hopping and the Coulomb gap

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