Research On The Finite Size Effect Of Nickel And Cobalt Films

In highly integrated electronic products,the component size of semiconductor products is the guarantee of product performance,and the current mainstream technology has reached within a few nanometers.In nano-sized materials,the interaction between electrons is a very common phenomenon.There is now a consensus that magnetism comes from the mutual coupling between electrons,but it is difficult for us to unify existing magnetism theories.The existing magnetic theory is affected by the fact that different types of magnetic materials need to be described by different models^[1].In order to understand the physical image of spin mutual coupling in depth,we use the finite size effect of Ni thin film doped with Cu^[2]to study the range of spin coupling interaction between electrons^[3].Combined with the existing conditions in the laboratory,the existing theoretical models were used to study the change of the spin coupling effect range of Cu doped in Ni thin films,it was found that the spin coupling range of the alloy became smaller as the Cu doping concentration increased,finally we put forward the theoretical hypothesis that the"magnetic mean free path"of electrons is reduced by Cu doping and scattering.With the popularization of digital products such as computers,the ability of computers to process data is getting higher and higher.Traditional dynamic random access memory has been difficult to meet the needs of the rapid development of society,so non-volatile memory based on magnetic charge storage data-The magnetic random access memory?MRAM?is designed.Among the 3d transition metal elements,Co and Co alloy multilayer metal film structures have been extensively studied by the scientific community due to their high scattering effect.At around 700k,Co will change from hcp to fcc,and it will be accompanied by changes in magnetic properties during the phase transition.Through experiments,it is found that in the BL/Co/CL sandwich structure,the magnetic properties of Co metal and the non-magnetic metal element in the adjacent layer have a certain coupling effect,so we are in the phase change magnetic behavior exhibited by the limited size effect of the Co layer metal.The relationship between the magnetic properties of the Co layer and the non-magnetic metal layer of the neighboring layer is explored.For the coupling between this non-magnetic metal and ferromagnetic element,we studied the effect of the type of non-magnetic metal material and different stacking structures on the magnetic properties of the intermediate Co.It was found that the cover layer has the greatest influence on the magnetic properties of the Co layer,which may be Provide some theoretical guidance for the subsequent SOT-MARAM architecture research.Finally,there is a summary of the full text.The full text contains technological exploration,theoretical verification and final theoretical exploration,all content is an indispensable part of scientific experiments.Based on the existing experimental results and cutting-edge scientific development,we propose possible application prospects for the experimental results.