Synthesis of Fe3O4 nanoparticles at 100°C and its magnetic characterization

Basit Öğe Kaydı
dc.contributor.authorOzkaya, Tevhide
dc.contributor.authorToprak, Muhammet S.
dc.contributor.authorBaykal, Abdulhadi
dc.contributor.authorKavas, Hueseyin
dc.contributor.authorKoseoglu, Yuksel
dc.contributor.authorAktas, Bekir
dc.date.accessioned2025-10-29T11:27:08Z
dc.date.issued2009
dc.departmentFakülteler, Temel Bilimler Fakültesi, Kimya Bölümü
dc.departmentFakülteler, Temel Bilimler Fakültesi, Fizik Bölümü
dc.description.abstractSuperparamagnetic iron oxide nanoparticles were synthesized by a novel, simple and cost-effective gel-to-crystalline method by alkalizing ferrous chloride with ammonium hydroxide at 80-100 degrees C under refluxing conditions. Average crystallite size is determined as 11 nm from XRD and 11.4 nm from TEM: magnetic domain size is 9.7 nm. The saturation magnetization is 390 emu/cm(3) at 300 K, and TB is 134 K. The reduction of magnetic particle size and M-s is attributed to the presence of non-magnetic (dead) surface layer, compositional variations, superparamagnet relaxation and spin canting because of the ultrafine nature of the material. The maximization in magnetization near the blocking temperature, T-B, is attributed to a large degree of inversion of the Fe3O4 particles. Results also indicated the existence of interparticle interactions in the thermomagnetic characteristics of spinels at lower field strengths. (C) 2008 Elsevier B.V. All rights reserved.
dc.description.sponsorshipFatih University Research Project Foundation [P50020602]
dc.description.sponsorshipMinistry of Industry of Turkey [00185.STZ.2007-2]
dc.description.sponsorshipKnut and Alice Wallenbergs Foundation [UAW2004.0224]
dc.description.sponsorshipThe authors are thankful to the Fatih University Research Project Foundation (contract no.: P50020602) and the Ministry of Industry of Turkey (San_tez project no. 00185.STZ.2007-2) for financial support of this study. The fellowship for Dr. M. S. Toprak from Knut and Alice Wallenbergs Foundation (no.: UAW2004.0224) is also thankfully acknowledged. Authors thank to Mr. Ali C. Basaran for his invaluable help with magnetic measurements and to Mr. Abhilash Sugunan for the language revision of the manuscript.
dc.identifier.doi10.1016/j.jallcom.2008.04.101
dc.identifier.endpage23
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.issue1-2
dc.identifier.orcid0000-0002-5205-0937
dc.identifier.scopus2-s2.0-61449169050
dc.identifier.scopusqualityQ1
dc.identifier.startpage18
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2008.04.101
dc.identifier.urihttps://hdl.handle.net/20.500.14854/10595
dc.identifier.volume472
dc.identifier.wosWOS:000264757200011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20251020
dc.subjectMagnetic materials
dc.subjectChemical synthesis
dc.subjectX-ray diffraction
dc.subjectMagnetite
dc.titleSynthesis of Fe3O4 nanoparticles at 100°C and its magnetic characterization
dc.typeArticle

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