We have investigated the structural and magnetic properties of [Co/CoxZn1−x]12 superlattices (x≤6.5) grown using electrochemical dual bath. X-ray diffraction shows that CoxZn1−x layers crystallize in a monoclinic phase. We have found that the magnetization of samples is significantly smaller than the expected one. Using ab initio calculations based on the fully relativistic Korringa-Kohn-Rostoker (KKR) method combined with the coherent potential approximation (CPA), we show that the interfacial mixing at the interface between Co/CoxZn1−x can explain the decrease in magnetization. This can be understood in terms of existence of magnetically dead layer rich in Zn at the interface with a corresponding thickness of around 6.5 Å.
Journal of Superconductivity and Novel Magnetism – Springer Journals
Published: Apr 3, 2017
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