Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8158363 | Journal of Magnetism and Magnetic Materials | 2013 | 7 Pages |
Abstract
We present the results of the temperature dependence of the electrical resistivity, Ï of disordered Ni100âxMnx alloys (x=15-37) in the temperature range 5â¤Tâ¤350 K. We find distinctly different behavior of Ï(T) below and above the multicritical point (x=25) recently found by us through detailed magnetic measurements in the same set of samples. In the ferromagnetic/ferro-spin-glass (xâ¤25) phase, Ï(T) is dominated by the ferro-spin-glass phase contribution below the glass transition temperature and above it by large electron-phonon and electron-magnon s-d scattering. In the spin-glass/antiferromagnetic regime (xâ¥25) resistivity minima show up due to larger disorder with resistivity â¼(150-185) μΩ cm. Here Ï(T) is dominated by electron-electron interactions â¼ââT and electron-phonon s-d scattering.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Pampa Pal, A.K. Majumdar, A.K. Nigam,