Effect of Sm:Co ratio in SmCo nanocomposites on the structural,
morphological and magnetic properties
Article Type :
Research Article
Kavita Kumari1*,
Naveen Yadav2, Mohit K. Sharma2, Sujata Kumari3,
Pratibha Sharma3, Sameer Saharan4, Sarita Khaturia5,
P. A. Alvi6, Bon-Heun Koo2* and Shalendra Kumar7*
Volume
5, Issue
1, Page
3-6, Year
2026, DOI
:10.17571/appsletts.2026.01002
Abstract :
This work reports the synthesis of SmCo based
magnetic nanocomposites (MNCs) with varying Sm:Co ratio, prepared using
chemical route technique followed by post synthesis heat treatment at 900 °C. The
prepared samples were characterized using high resolution field emission
scanning electron microscopy (HRFESEM), Energy Dispersive X-ray spectroscopy
(EDS), X-ray Diffraction (XRD) and dc-magnetization to analyze the effect of
Sm:Co ratio on the morphological, structural and magnetic properties of the
MNCs. The HRFESEM images revealed the irregular shape morphology in a size
range of 62 – 92 nm. The EDS maps and spectra confirmed the existence of Sm, Co
and Oxygen in the samples. The XRD analysis revealed the presence of metallic
cobalt, SmCo5 and Sm2O3 with varying phase
fractions. The highest magnetization of 125.8 emu/g has been obtained for
Sm:Co::1:1 corresponding to a magnetic anisotropy value of 1.44 x 106 erg/cm3.
Sample with highest Co (>60%) showed highest saturation magnetization which
was reduced with decreasing Co content. Thus, the magnetization behavior is
found to be dependent on the nature of phases and their phase fractions.
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