Article ID Journal Published Year Pages File Type
8162713 Physica B: Condensed Matter 2014 4 Pages PDF
Abstract
Irrespective of the strength of the applied magnetic field (0≤H≤90kOe), strong departures from the Fermi liquid behavior of resistivity, ρ, (ρH~T2) have been observed at temperatures below 15 K in the nanocrystalline Ni samples with average crystallite sizes 10 nm and 20 nm. A combination of T2 and T4 power laws adequately describes ρH(T) in the temperature interval 16K≤T≤65K whereas the variation with temperature of ρH slows down to ~T3/2 in the range 130K≤T≤300K. These observations assert that the electron-electron scattering dominates over the coherent electron-magnon scattering in the temperature range 16 K-65 K and the incoherent electron-magnon scattering takes over at the temperatures T>130K.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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