Electrical resistivity behaviour of reentrant amorphous Fe-Zr based alloys

The temperature dependence of the electrical resistivity of a- Fe100-xZrx a lloys (x = 8.5, 9.5 and 10) and a-Fe86Mn4Zr10 in the temperature range 5-30 0 K has been repot ted. The resistivity is found to decrease as the tempera ture is raised and goes through a minimum at a particular temperature (T-mi n). T-min is observed at around Curie temperature of that particular compos ition. Our observations indicate son ie correlation between magnetic and el ectrical resistivity behaviour near the transition region. A quantitative a nalysis based on both magnetic and non-magnetic scattering models has been carried out in ol-der to quantify the contributions from these scattering p rocesses. It is found that the magnetic contribution is noticeable around t he transition temperature in addition to the dominant non-magnetic contribu tion. It is found that in addition to magnetic scattering, non-magnetic sca ttering a critical scattering mechanism is also required to explain the com plete range of experimental data.