Structural and Magnetic Properties of Fe/Cu/Fe Trilayers

In this work, Fe/Cu/Fe tri-layers with different thi cknesses of Fe and Cu layers were prepared using the thermal evaporation method on a glass substrate. The X-Ray Diffraction (XRD) study indicates various peaks with 2θ�between 43 ° and 45 ° , which are related to Fe bcc and Cu fcc structures. Images of the sample surfaces recorded by scanning electron microscopy (SEM) show a uniform and continuous deposition of grains. Magnetic properties and hysteresi s loops were measured by a vibrating sample magnetometer (VSM). The tri-layers magneto-resistance (MR) was obtained by the fourpoint method using the Van-Der-Pauw law. The result obtained indicates that with an increase in the Fe layer thickness, the tri-layers MR decreases. Also, an increase in the M R was observed with the increase in the Cu layer thi ckness. The law of approach to saturation was used to calculate the ma gnetic anisotropy and to obtain the effective magne tic anisotropy constant.