Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8162713 | Physica B: Condensed Matter | 2014 | 4 Pages |
Abstract
Irrespective of the strength of the applied magnetic field (0â¤Hâ¤90kOe), strong departures from the Fermi liquid behavior of resistivity, Ï, (ÏH~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 ÏH(T) in the temperature interval 16Kâ¤Tâ¤65K whereas the variation with temperature of ÏH slows down to ~T3/2 in the range 130Kâ¤Tâ¤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
Authors
Pavan Venu Prakash Madduri, S.N. Kaul,