| 1. | Brzózka K.♦, Krajewski M., Szumiata T.♦, Górka B.♦, Gawroński M.♦, Kaczor T.♦, Lin W.S.♦, Lin H.M.♦, Phase Evolution of Iron Nanoparticles Subjected to Thermal Treatment, ACTA PHYSICA POLONICA A, ISSN: 0587-4246, DOI: 10.12693/APhysPolA.134.1015, Vol.134, No.5, pp.1015-1020, 2018 Abstract:Magnetic nanoparticles based on iron or iron oxides represent an excellent nanomaterial in respect of their fundamental research as well as numerous applications. This work presents a Mössbauer study of the influence of thermal treatment on the structure and phase composition of iron nanoparticles fabricated via a simple reduction reaction. Identification of iron-containing phases has been carried out for the series of samples annealed at different temperatures ranging between 200 C and 800 C. Both crystalline and amorphous iron as well as variety of iron oxides have been detected. It has been proved that the nanoparticles annealed at 500 C show superparamagnetic behavior as a result of ultrafine sizes of crystallites of iron oxides that arise in the oxidation processes. Affiliations:| Brzózka K. | - | University of Technology and Humanities in Radom (PL) | | Krajewski M. | - | IPPT PAN | | Szumiata T. | - | other affiliation | | Górka B. | - | other affiliation | | Gawroński M. | - | other affiliation | | Kaczor T. | - | University of Technology and Humanities in Radom (PL) | | Lin W.S. | - | Tatung University (TW) | | Lin H.M. | - | Tatung University (TW) |
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