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

Journal Article · Fri Jun 15 00:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4379-8· OSTI ID:22771186

Dilip, R.

Barium ferrite (BaFe{sub 2}O{sub 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{sub 2}O{sub 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{sub s}) with 3775.08 Oe coercivity. The change in values of coercivity (H{sub 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.

• OSTI ID: 22771186
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 6; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM COMPOUNDS
COERCIVE FORCE
COMBUSTION
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
FERRITES
FLUORESCENCE
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
MAGNETIC PROPERTIES
MAGNETIZATION
MORPHOLOGICAL CHANGES
MORPHOLOGY
NANOPARTICLES
PARTICLE SIZE
SPINELS
SURFACTANTS
TRANSMISSION ELECTRON MICROSCOPY
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION