Structural elucidation, and morphological and magnetic behavior evaluations, of low-temperature sintered, Ce-doped, nanostructured garnet ferrites

Journal Article · Tue May 15 00:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.01.009· OSTI ID:22803953

Ali, Kashif ^[1]; Umer, Asim ^[2]; Ahmad, Tahir; Khan, Muhammad Azhar

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1. Department of Mathematics, Muhammad Nawaz Sharif University of Engineering and Technology (MNSUET), 60000 Multan (Pakistan)
2. Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology (MNSUET), 60000 Multan (Pakistan)

Highlights: • Ce{sub x}Gd{sub 3.5-x}Fe{sub 4.5}O{sub 12} were synthesized via sol gel self-combustion route. • Crystallite size was found in the range of 20–38 nm. • Morphology of Ce-Gd doped and undoped garnets were observed systematically. • Switching field distribution was calculated for further applications of the nanoferrites. • These garnets also have potential applications in microwave high frequency devices. - Abstract: Low-temperature sintered Ce{sub x}Gd{sub 3.5-x}Fe{sub 4.5}O{sub 12} (x = 0.0, 0.4, 0.8, 1.2, 1.6, 2.0 and 2.4) garnet ferrites were synthesized via a sol-gel self-combustion route. Phase, structure, morphology and magnetic investigations were done using FTIR, XRD, FESEM, and VSM, respectively. Single-phase structures of all Ce{sup 3+} substituted nano-sized garnet ferrites were confirmed through XRD. The crystallite size was decreased with Ce{sup 3+}incorporation. Relevant structural parameters such as site radii, bond lengths, ionic radii, and shared edges were calculated using XRD. The vibrational spectroscopy stretching band studies were also done using FTIR. The grain size and morphology were also analyzed using FESEM. The magnetic remanance, saturation, and coercivity were found to increase systematically with an increase in Ce{sup 3+} concentration in these garnets. Switching field distribution curves were also plotted using the first derivative of the demagnetization data from MH loops. The better magnetic properties of these nanogarnets suggest their use for miniaturization of the devices in various applications.

• OSTI ID: 22803953
• Journal Information: Materials Research Bulletin, Vol. 101; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC RADII
BOND LENGTHS
CERIUM
CERIUM IONS
COERCIVE FORCE
DEMAGNETIZATION
DOPED MATERIALS
FERRITE GARNETS
FERRITES
FOURIER TRANSFORM SPECTROMETERS
GADOLINIUM
GRAIN SIZE
MAGNETIC PROPERTIES
MICROWAVE RADIATION
MINIATURIZATION
MORPHOLOGY
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SPECTROSCOPY
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION