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Exploring the Impact of CeO2 Doping on the Structure and Magnetism of Hematite Nanoparticles

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Title Exploring the Impact of CeO2 Doping on the Structure and Magnetism of Hematite Nanoparticles
 
Creator Seema
Meenakshi
Sharma, Rajesh
 
Subject Ceria-doped Fe2O3 nanoparticles
XRD
FTIR
Structural and Magnetic properties
 
Description 759-763
In this study, Fe2O3 nanoparticles were doped with varying concentrations of cerium oxide (CeO2) (5%, 10%, and 20%)
were synthesized by using a microwave treated co-precipitation method and thereafter, calcined at 600oC temperature for
2hrs. The X-ray diffraction (XRD) analysis revealed that all calcined samples exhibited hexagonal crystalline structures,
with a decrease in grain size from 60.547nm to 47.060 nm with increasing CeO2 concentration. Fourier transform infrared
(FTIR) spectroscopy confirmed characteristic peaks of hydroxyl group at 3541 cm-1 and 1624 cm-1, while sharp peaks of
471 cm-1 were identified as the O-Ce-O stretching vibrational band. The observed FTIR patterns were consistent with the
XRD results supporting the influence of differing ionic radii between Ce4+ and Fe3+ ions. The Magnetic properties were
examined through by using a vibrating sample magnetometer (VSM) and revealed that saturation magnetization peaked at
5% CeO2 dopant concentration (Ms = 33.2×10-2 emu/g), while coercivity reached its maximum at 10% concentration
(Hc = 548.26 Oe). Conversely, remnant magnetization (Mr) decreased (4.3×10-2, 3.1×10-2, and 0.9×10-2 emu/g) with
increasing cerium oxide concentration (5%, 10%, and 20%).
 
Date 2024-09-17T11:22:52Z
2024-09-17T11:22:52Z
2024-09
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/64547
https://doi.org/10.56042/ijpap.v62i9.11572
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.62(09) [September 2024]