Thermal synthesis of Hematite nanoparticles: Structural, magnetic and morphological characterizations
Publish place: International Journal of Nano Dimension، Vol: 11، Issue: 2
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJND-11-2_009
تاریخ نمایه سازی: 17 خرداد 1401
Abstract:
Hematite (α-Fe۲O۳) nanoparticle was synthesized using organometallic compound - ferrocene carboxaldehyde through solventless solid state thermal decomposition technique. The crystal structure, magnetic and morphological properties of the decomposed material were studied using powder X-ray diffraction (XRD), superconducting quantum interference device (SQUID) magnetometry, ۵۷Fe Mössbauer spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX) techniques. Structural study confirmed that the synthesized material is hematite with hexagonal phase and good crystallinity. The temperature-dependent magnetization measurement exhibited the Morin transition - the yardstick for hematite formation. Mössbauer spectroscopic study confirmed the purity of phase of the synthesized material. The SEM study observed mostly the agglomerated tiny particles along with some ring-shaped surface structures. The TEM study of the synthesized material showed that the highest distribution of the particles with ~۵ nm size. The observed EDX spectra confirmed the existence of Fe and O in the synthesized material. The solid state reaction process leading to hematite on decomposition of ferrocene carboxaldehyde has also been proposed. Present study describes a simple process for the preparation of pure hematite nanoparticle by solventless method.
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Authors
Anubha Dey
Department of Physics, Institute of Science, Visva-Bharati University, Santiniketan, ۷۳۱۲۳۵, India.
Maciej Zubko
Institute of Material Science, University of Silesia, Poland.
Joachim Kusz
Institute of Physics, University of Silesia, Katowice, Poland.
Varimalla Raghavendra Reddy
UGC-DAE Consortium for Scientific Research, Mossbauer and MOKE laboratory, Indore, India.
Alok Banerjee
UGC-DAE Consortium for Scientific Research, Mossbauer and MOKE laboratory, Indore, India.
Ashis Bhattacharjee
Department of Physics, Institute of Science, Visva-Bharati University, Santiniketan, ۷۳۱۲۳۵, India.
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