Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/75677
Title: Electrotransport in the La2NiO4-based solid solutions
Authors: Cherepanov, V. A.
Gilev, A. R.
Kiselev, E. A.
Issue Date: 2019
Publisher: De Gruyter
Citation: Cherepanov V. A. Electrotransport in the La2NiO4-based solid solutions / V. A. Cherepanov, A. R. Gilev, E. A. Kiselev // Pure and Applied Chemistry. — 2019. — Vol. 91. — Iss. 6. — P. 911-922.
Abstract: This work combines new and earlier obtained results on electron hole and oxygen-ion transport in the La2NiO4-based solid solutions. The effect of lanthanum substitution with Ca/Sr and nickel with Fe, Mn, Co or Cu on transport properties of La2-xAxNi1-yMeyO4+δ was analyzed and discussed at different substitution levels. Besides the changes in concentration and mobility of electron holes induced by the doping with cations of different nature, the partial transformation of Ni3+ from low-spin to high-spin state was shown to have a profound effect on transport properties of these materials leading to a notable decrease in mobility of electron holes, especially in the strontium-rich oxides. The obtained results suggested that the size factor was the main driving force behind the observed transformation of Ni3+. The oxygen-ion transport in La2-xAxNi1-yMeyO4+δ was characterized by significant surface exchange limitations, which can be reduced only at relatively high concentrations of strontium and iron, and should be taken into account while evaluating the ionic conductivity by means of oxygen permeation or the modified Hebb-Wagner polarization method. © 2019 IUPAC and De Gruyter.
Keywords: HTMC-XVI
IONIC CONDUCTIVITY
MOBILITY
SPIN STATE
SURFACE EXCHANGE LIMITATIONS
TOTAL CONDUCTIVITY
CARRIER MOBILITY
ELECTRON MOBILITY
ION EXCHANGE
IONIC CONDUCTIVITY
OXYGEN
SPIN DYNAMICS
STRONTIUM COMPOUNDS
TRANSPORT PROPERTIES
HTMC-16
LANTHANUM SUBSTITUTION
OXYGEN PERMEATION
PARTIAL TRANSFORMATION
SIGNIFICANT SURFACES
SPIN STATE
SURFACE EXCHANGES
WAGNER POLARIZATIONS
SOLID SOLUTIONS
URI: http://hdl.handle.net/10995/75677
metadata.dc.rights: info:eu-repo/semantics/openAccess
SCOPUS ID: 85064415723
WOS ID: 000471262400004
PURE ID: 10028463
ISSN: 0033-4545
DOI: 10.1515/pac-2018-1001
metadata.dc.description.sponsorship: This work was supported in parts by the Ministry of Education and Science of Russian Federation (State Task 4.2288.2017) and by Act 211 Government of the Russian Federation, agreement 02.A03.21.0006.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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