Evaluation of Differences between Fe3O4 Micro- and Nanoparticles Properties
Z.A. Duriagina, T.L. Tepla and V.V. Kulyk
Department of Applied Materials Science and Materials Engineering, Lviv Polytechnic National University, Bandera Str., 12, Lviv, 79013, Ukraine
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Small sizes of nanoparticles lead to the appearance of new unique functional properties. Under transition to nanosizes in metals and their compounds new specific characteristics appears. In this work, the microstructural and magnetic properties of Fe3O4 nanoparticles (Fe3O4-NP) have been compared with those of commercially available Fe3O4 microparticles (Fe3O4-MP) and detailed analysis of differences has been carried out. The synthesis of Fe3O4-NP was carried out by means of colloidal method performed without the use of surfactants. Commercial and synthesized particles were characterized using NTEGRA Prima (NT-MDT) atomic force microscope. For magnetic properties investigations we used the method of vibrating sample magnetometer.

DOI: 10.12693/APhysPolA.133.829
topics: Fe3O4 micro- and nanoparticles, atomic-force microscopy, magnetization, superparamagnetism