Microstructure, Magnetic Properties, and Spin Polarization of Quaternary Heusler Alloys

This article presents experiments on the magnetic characterisation of quaternary Heusler alloys for spintronic applications. In this work, polycrystalline Co₂Cr_1-XFe_XAl (CCFA), Co₂Cr_1-XV_XAl (CCVA) and Co₂V_1-XFe_XAl (CVFA) bulk alloys were prepared by arc melting for mictrostructural, magnetic, and spin polarised properties. Magnetic measurements were carried out using VSM and SQUID magnetometry. Material microstructure was investigated through XRD and TEM analysis. And finally, spin polarisation measurements were carried out using point contact Andreev reflection technique (PCAR).