Tailoring Magnetic Properties of Fe-CoNi Core-Shell Nanostructures by using Two-Step Electrodeposition Method

Saroj Parajuli; Muhammad Irfan

doi:10.5281/zenodo.8007891

Authors

Saroj Parajuli Goldengate International College, 44621, Kathmandu, Nepal https://orcid.org/0009-0006-5051-2786
Muhammad Irfan Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan https://orcid.org/0000-0001-8584-0620

DOI:

https://doi.org/10.5281/zenodo.8007891

Keywords:

Fe-CoNi Core-Shell NWs, Two-step Electrodeposition, Magnetization reversal mechanism, ZFC-FC curve

Abstract

Core-shell nanogeometries are class of nonstructural materials have been lively in the area of research for their sizable applications. Iron (Fe) electrodeposited inside Cobalt-Nickle (CoNi) alloy nanotubes (NTs) were fabricated using a two-step dc electrodeposition method within the nanopores of anodized aluminum oxide (AAO) template. Fe-CoNi core-shell nano architectures were crystalline in nature. The X-ray diffraction and electron microscopy confirmed the presence of face cubic centre (fcc) in both Fe and CoNi at core and shell region. Curling magnetization reversal mechanism has been explained by angular dependence of coercivity (Hc). At Low temperature Hc of NTs and core-shell nanostructures follow the thermal activation model. Temperature dependence of Hc of both nanoconfiguration ensue the 3/2 power law for the field dependence of energy barrier. Deviation between FC and ZFC decline progressively with rise in temperature.

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