Magnetite syntheses from room temperature to 150°C with and without microwaves

Sridhar Komarneni, Weiwei Hu, Young Dong Noh, Amanda Van Orden, Shouhua Feng, Chengzhen Wei, Huan Pang, Feng Gao, Qingyi Lu, Hiroaki Katsuki

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Parameters such as temperature, time and presence or absence of microwaves affected the particle size and magnetic properties of synthetic magnetite. The presence of microwaves during crystallization significantly increased the particle size of magnetite in a short time with improved magnetic properties. Magnetite samples were characterized by X-ray diffraction, transmission electron microscopy (TEM) and saturation magnetization measurements. The TEM crystal sizes varied from about 40 to 50 nm at room temperature to greater than 50 nm with wider crystal size distribution at higher temperatures. The saturation magnetization values of synthetic magnetites ranged from 57.4 to 89.0 emu/g.

Original languageEnglish (US)
Pages (from-to)2563-2568
Number of pages6
JournalCeramics International
Volume38
Issue number3
DOIs
StatePublished - Apr 1 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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    Komarneni, S., Hu, W., Noh, Y. D., Van Orden, A., Feng, S., Wei, C., Pang, H., Gao, F., Lu, Q., & Katsuki, H. (2012). Magnetite syntheses from room temperature to 150°C with and without microwaves. Ceramics International, 38(3), 2563-2568. https://doi.org/10.1016/j.ceramint.2011.11.027