Effects of Sintering Temperature on Structural, Morphological and Magnetic Properties of Strontium Ferrite Nanoparticles

Journal Article · Mon Apr 15 00:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4799-0· OSTI ID:22921316

Mousavi Ghahfarokhi, S. E., E-mail: [e-mail]; Mohammadzadeh Shobegar, E., E-mail: [e-mail]; Zargar Shoushtari, M., E-mail: [e-mail] ^[1]

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1. Shahid Chamran University of Ahvaz, Department of Physics, Faculty of Science (Iran, Islamic Republic of)

In the present investigation, structural, morphological and magnetic properties of SrFe{sub 2}O{sub 4} ferrite nanoparticles prepared by a sol–gel method were studied. The techniques used in this investigation were thermogravimetric analysis/differential thermal analysis (TGA/DTA), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectrometry (FT-IR), vibrating sample magnetometry (VSM) and Curie temperature analysis. The average crystallite sizes of the SrFe{sub 2}O{sub 4} were calculated using the Scherrer formula and found in the range of 11–22 nm, and this can be attributed to the grain growth of the particles. The lattice parameter of SrFe{sub 2}O{sub 4} nanoparticles decreased from 6.64 to 6.51 nm as the sintering temperature was raised from 600 to 900 °C. FT-IR analysis confirmed that bands in the range 430–590 cm{sup − 1} are due to the stretching vibration of oxygen atom and metal ions (M–O) that is Fe–O confirming the formation of spinel ferrite. Surface morphology of the samples has been studied using FESEM. The elemental composition along with their relative ratios was given by EDX and was found to be in agreement with their initial calculated values. The saturation magnetization, magnetic coercivity and remanence increase with an increasing sintering temperature from 600 to 900 °C. The present study reports the Curie temperature with an amount of 551 °C of the synthesized strontium nanoferrites using the Faraday technique.

• OSTI ID: 22921316
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 4; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
COERCIVE FORCE
CURIE POINT
DIFFERENTIAL THERMAL ANALYSIS
FERRITES
FIELD EMISSION
FOURIER TRANSFORMATION
GRAIN GROWTH
INFRARED SPECTRA
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIZATION
NANOPARTICLES
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SPINELS
STRONTIUM COMPOUNDS
THERMAL GRAVIMETRIC ANALYSIS
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY