Abstract
We report a systematic study of the structural and quasi-static magnetic properties, as well as of the dynamic magnetic response through MI effect, in Co2FeAl and MgO//Co2FeAl single layers and a MgO//Co2FeAl/Ag/Co2FeAl trilayered film, all grown onto an amorphous substrate. We present a new route to induce the crystalline structure in the Co2FeAl alloy and verify that changes in the structural phase of this material leads to remarkable modifications of the magnetic anisotropy and, consequently, dynamic magnetic behavior. Considering the electrical and magnetic properties of the Co2FeAl, our results open new possibilities for technological applications of this full-Heusler alloy in rigid and flexible spintronic devices.
Highlights
The broad range of phenomena in theelds of spintronics and magnonics with potential for technological applications requires the development and optimization of ferromagnetic materials with specic static and dynamic magnetic properties
We have investigated the structural features, quasi-static magnetic properties, and dynamic magnetic response through magnetoimpedance e®ect of Co2FeAl and MgO//Co2FeAl single layers and of a MgO//Co2FeAl/Ag/Co2FeAl trilayeredlm, all grown onto amorphous substrate
The MgO//Co2FeAl single layer has presented the well-known magnetic behavior veried in anisotropic systems with uniaxial magnetic anisotropy
Summary
The broad range of phenomena in theelds of spintronics and magnonics with potential for technological applications requires the development and optimization of ferromagnetic materials with specic static and dynamic magnetic properties. While systems with high damping parameter are explored in spin pumping and inverse spin Hall e®ect applications,[1,2,3] systems with low damping parameter present a remarkable importance for magnonics devices[4,5,6] and ultrafast sensors.[7,8]. Corresponds to an interesting alternative for injection and detection of spin-polarized currents,[10] even though a completely disordered structure is observed.[11] In particular, this alloy, besides the low damping parameter, can reach up to 100% spin polarized current at the Fermi level, justifying the strong interest on this material in the last years.
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