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Synthesis of Iron Oxide Nanoparticles from Iron Acetylacetonate and Cyclopentadienyliron Dicarbonyl Dimer in Low Pressure Plasma — Effect of Plasma Parameters on Morphology and Magnetic Properties

Vineet Panchal

Mukesh Patel School of Technology Management and Engineering, NMIMS University, Mumbai 400056, India

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Upendra Bhandarkar

Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India

Corresponding author.

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Manoj Neergat

Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India

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, and

K. G. Suresh

Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India

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https://doi.org/10.1142/S0219581X15500040Cited by:5 (Source: Crossref)

Abstract

Iron oxide nanoparticles are synthesized using organometallic precursors namely, iron (III) acetylacetonate and cyclopentadienyliron dicarbonyl dimer in a capacitively coupled low pressure plasma system. They are characterized using High Resolution Transmission Electron Microscopy (HRTEM), X-ray Diffraction (XRD), magnetization studies and Raman spectroscopy. The role of hydrogen and RF (Radio Frequency) power on the crystalline and magnetic properties of the nanoparticles is studied. Incorporation of hydrogen to the Plasma-Enhanced Chemical Vapor Deposition (PECVD) chamber during the synthesis facilitates both crystallization of iron oxide nanoparticles and reduction of carbon content in the product. The saturation magnetization of iron oxide nanoparticles synthesized using iron (III) acetylacetonate and cyclopentadienyliron dicarbonyl dimer in presence of hydrogen at 200 W RF power is higher than that synthesized in the absence of hydrogen at 50 W RF power. In case of nanoparticles synthesized using iron (III) acetylacetonate, the saturation magnetization increases from 1.5 emu g^-1 to 19 emu g^-1, and for the same synthesized from cyclopentadienyliron dicarbonyl dimer it increases from 3.2 emu g^-1 to 22.4 emu g^-1.

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