Effect of Barium on Morphological Transition and Magnetic and Dielectric Properties in Ferrite Nanoparticles

Barium ferrite (BaFe 2 O 4 ) nanoparticles were synthesized by auto combustion method under different weight percentages of barium. The role of barium in the behavior of spinel ferrite property is identified from this study. XRD exhibits prominent orientation of (212) for BaFe 2 O 4 has confirmed es...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2018-06, Vol.31 (6), p.1741-1750
Main Authors: Dilip, R., Jayaprakash, R.
Format: Article
Language:English
Subjects:
BARIUM COMPOUNDS
Characterization and Evaluation of Materials
COERCIVE FORCE
COMBUSTION
Condensed Matter Physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
FERRITES
FLUORESCENCE
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
Magnetic Materials
MAGNETIC PROPERTIES
Magnetism
MAGNETIZATION
MORPHOLOGICAL CHANGES
MORPHOLOGY
NANOPARTICLES
Original Paper
PARTICLE SIZE
Physics
Physics and Astronomy
SPINELS
Strongly Correlated Systems
Superconductivity
SURFACTANTS
TRANSMISSION ELECTRON MICROSCOPY
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION
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Summary:Barium ferrite (BaFe 2 O 4 ) nanoparticles were synthesized by auto combustion method under different weight percentages of barium. The role of barium in the behavior of spinel ferrite property is identified from this study. XRD exhibits prominent orientation of (212) for BaFe 2 O 4 has confirmed especially in 20 and 30 wt% of barium. The addition of barium metal induced the specific vibration in FTIR spectra and such changes coincide well with the particle size. Further, the EDX spectrum reflects the atomic percentage of elemental presence in the samples of barium ferrite. Addition of barium on ferrite nanoparticles reduces the intensity of fluorescence. The morphological changes occurred due to increasing doping concentration of barium and is visualized from the FESEM and TEM images. The formation of different morphologies such as spherical, hexagonal platelets and small rectangular bar shape are observed only due to inclusion of barium at surfactant medium. The magnetic properties of the barium ferrite samples are studied by VSM. It reveals that 35.11 emu/g saturation magnetization ( M s ) with 3775.08 Oe coercivity. The change in values of coercivity ( H c ) from 3775.08 to 1572.95 Oe due to the variation of barium levels confirmed that the role of barium induced the hard magnetic behavior. The dielectric study also indicates the significance of barium ferrite in the variation of dielectric constant.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-017-4379-8