Magnetotransport properties in text{ Ni }_{81}text{ Fe }_{19}text{/Zr } multi-layers

In this work, we present a study of the magneto transport properties in magnetic multilayered structure $text{ Ni }_{81}text{ Fe }_{19}text{/Zr }$ Ni 81 Fe 19 /Zr . The magnetic $(text{ Ni }_{81}text{ Fe }_{19})$ ( Ni 81 Fe 19 ) and non magnetic (Zr) layer thickness $(mathbf{t}_mathbf{NiFe}, mathbf{t}_mathbf{zr})$ ( t NiFe , t zr ) effects on the magneto resistance (MR) are discussed theoretically in the framework of the Johnson–Camley semi classical approach based on the Boltzmann transport equation. A comparison between calculated and measured MR is obtained. The observed MR ratio oscillates for Zr layer thickness with an average period of 7Å. A generally weak $text{ MR }(text{ t }_{mathrm{NiFe}})$ MR ( t NiFe ) ratio for fixed $mathbf{t}_mathbf{zr}$ t zr is obtained and it shows a maxima peak of the MR with a value of 1.8 % located at $mathbf{t}_mathbf{NiFe}= 80$ t NiFe = 80 Å.