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Temperature Dependence of the Conductivity in Ceramic Materials Containing Nickel Nanoparticles
Author(s) -
Abdurakhmanov Umarbek,
Rakhimova Yayra,
Mukhamedov Gafurjan,
Balberg Isaac
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02804.x
Subject(s) - percolation (cognitive psychology) , materials science , nickel , ceramic , nanoparticle , variable range hopping , conductivity , electrical resistivity and conductivity , atmospheric temperature range , homogeneous , percolation threshold , composite material , percolation theory , condensed matter physics , nanotechnology , metallurgy , thermodynamics , thermal conduction , chemistry , engineering , electrical engineering , physics , neuroscience , biology
We have measured and analyzed the temperature dependence of the conductivity of composites in which nickel nanoparticles are embedded in an insulating matrix. Observing a transition from a variable‐range hopping to a near‐neighbor hopping, with increasing temperature, is suggested to correspond to the microscopically observed transition from a homogeneous‐like to a percolation‐like electrical network.