Journal
MATERIALS LETTERS
Volume 133, Issue -, Pages 259-261Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2014.07.031
Keywords
Nanoparticles; Magnetic materials; Powder technology; Microwave; Ball milling
Funding
- Hunan Provincial Nature Science Foundation of China [14JJ1013]
- Program for New Century Excellent Talents in University [NCET-10-0360]
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Ni0.5Zn0.5Fe2O4 was synthesized through only one step by microwave assisted ball milling at low temperature. The synthesized particles are well dispersed and the crystalline structures are perfect without disorder layer observed near the surface of nano-crystal. Microwave induced the formation of Fe2O3 and in this process intense heat was released, providing activation energy for further reactions. The ball milling process not only enables the constant dissolution of oxygen into the reacting solution but also creates exfoliation of produced Ni0.5Zn0.5Fe2O4 nanoparticles from the surface of the milling balls or precursor Fe particles, exposing new iron surfaces for continued reaction. Microwave assisted ball milling improves the solution conductivity and reactivity, it may be responsible for the variety of the solution temperatures increasing speed in microwave field. (C) 2014 Elsevier B.V. All rights reserved.
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