Physical Properties of Encapsulated Iron Oxide

Abstract:

The size effect of magnetic nanoparticles provides a various magnetic characteristic as a change of domain size. We report, synthesis of core-shell iron oxide and magnetic properties. Iron oxide particles were synthesized by co-precipitation method of iron (III) FeCl₃.6H₂O, iron (II) FeCl₂.4H₂O, in the mixture of with or without TEOS to investigated the physical properties. From XRD measurement, it was observed that all iron oxide particles with or without mixture of SiO₂ has a hematite phase of a-Fe₂O₃. From M-H loop measurement, it was observed that the iron oxide without SiO₂ has a ferromagnetic characteristic, while the iron oxide with SiO₂ showed a medium state as a contribution of superparamagnetic and ferromagnetic properties.

• Periodical: Materials Science Forum (Volume 966)
• Pages: 277-281
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.966.277
• Online since: August 2019
• Authors: Togar Saragi*, Bayu Permana, Arnold Therigan, Sahrul Hidayat, Norman Syakir, Risdiana Risdiana
• Keywords: Encapsulated, Fe₃O₄, Medium State, M-H Loop, Superparamagnetic, α-Fe₂O₃

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