2004/06/08 by Deepa Thapa, Thapa, Deepa, V. R. Palkar +7
Energy · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron oxide chemistry and applications #Magnetic Properties and Synthesis of Ferrites #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0406184
10 pages of text and figures
arxiv created 2004/06/08 · openalex publication_date 2004/06/08 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We have developed a simple precipitation route to synthesize magnetite (Fe3O4) nano-particles with controlled size without any requirement of calcination step at high temperatures. The study of these nano-particles indicates an enhancement in saturation magnetization with reduction in size down to ~10 nm beyond which the magnetization reduces. The latter is attributed to surface effects becoming predominant as surface to core volume ratio increases. From the view -point of applications, 10 nm size of magnetite particles seems to be the optimum.