Studying the Temperature Effect on the Magnetic Behavior of Fe3O4 Water Based Ferrofluid

• Published in: Key engineering materials Vol. 744; pp. 468 - 472
• Main Authors: Amirabadizadeh, Ahmad, Lotfollahi, Zahra, Zelati, Amir
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.07.2017
• Subjects: Anisotropy; Crystallites; Ferrofluids; Iron oxides; Magnetic measurement; Magnetic properties; Magnetism; Magnetite; Morphology; Nanoparticles; Size distribution; Softness; Structural analysis; Temperature effects; VSM; Magnetite Ferrofluid; Co-Precipitation Method; Magnetic Properties
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/www.scientific.net/KEM.744.468

In this study, Iron Oxide (Fe3O4) nanoparticles water based ferrofluid, was synthesized by co-precipitation method. XRD was used to study the structural characterization of the sample and to measure the size of the crystallites (using Scherrer equation). TEM was utilized to examine the shape, the size distribution and the morphology of the nanoparticles. VSM was carried out to measure the magnetic properties (like Mr, Ms and Hc) of the Fe3O4 (magnetite) nanoparticle and magnetite ferrofluid at 80 and 300 K. The results indicate that the average size of the magnetite roughly spherical shape nanoparticles is 13nm. The VSM results show that the magnetite ferrofluid contains single domain magnetic nanoparticles with superparamagnetic behavior. In addition, the magnetic measurements demonstrate that with decreasing the temperature of the ferrofluid, its magnetic softness decreases while its anisotropy increases.