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Structural and Magnetic Characterization of Nickel Nanoparticles Synthesized through Chemical Routes

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Title Structural and Magnetic Characterization of Nickel Nanoparticles Synthesized through Chemical Routes
 
Creator Laha, Pinaki
Gayen, Rabindra Nath
 
Subject Nanoparticle
Nickel
Chemical synthesis
Magnetic properties
 
Description 503-509
This study presents the magnetic properties of clusters of ultrafine nickel nanoparticles synthesized through an aqueous
chemical reduction technique. The morphology and microstructure of the synthesized nanostructures were characterized
using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The
XRD results indicate that the nickel nanoparticles exhibit a polycrystalline face-centered cubic (FCC) structure with a
particle size of 16 nm. The magnetic properties were investigated using a vibrating sample magnetometer (VSM) at different
temperatures (80 K, 150 K, 300 K, and 400 K). The hysteresis loop confirms the ferromagnetic behaviour of the nickel
nanoparticles. Samples grown under specific conditions exhibit a systematic change in saturation magnetization (Ms) and
coercive field (HC) with increasing temperature. The variation in saturation magnetization may be attributed to a decrease in
particle size with temperature, resulting in an increased area-to-volume ratio.
The coercivity of the prepared nanoparticles demonstrates an increasing trend with decreasing temperature.
Micromagnetic simulations using mumax3 were performed to explore the temperature dependency of nickel nanoparticles,
and the results validate that coercivity decreases with an increase in temperature.
 
Date 2024-06-07T09:45:51Z
2024-06-07T09:45:51Z
2024-06
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/64048
https://doi.org/10.56042/ijpap.v62i6.7207
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.62(06) [June 2024]