By a News Reporter-Staff News Editor at Journal of Technology -- Research findings on Materials Science are discussed in a new report. According to news reporting out of Newark, Delaware, by VerticalNews editors, research stated, "The structure and magnetic properties of Fe nano-particles prepared by the sonochemistry method were systematically studied. The power of sonicator played an important role in the microstructure and magnetic properties of the nano-particles."
Our news journalists obtained a quote from the research from the University of Delaware, "Initial X-ray powder diffraction patterns of Fe nano-particles prepared with a power of 180 W and 450 W exhibited amorphous-like diffraction peaks. TEM images showed that the average particle size of Fe nano-particles made with 180 W is 2-3 nm and increases to 5-6 nm with 450 W. The amorphous and superparamagnetic nature of the Fe nano-particles has been confirmed by TEM, SAD and magnetometry measurements. The saturation magnetization (M-s) of the 2-3 nm Fe nano-particles is only 0.414 T. Increasing the power to 450 W, the Ms of Fe nano-particles with the size of 5-6 nm can reach the value of 0.958 T. To obtain fully crystalline particles, the Fe nano-particles were annealed at 923 K for 2 min."
According to the news editors, the research concluded: "After annealing, the Ms increased to 1.807 T. TEM results show that the amorphous-like Fe nano-particles have been transformed to crystalline bcc alpha-Fe."
For more information on this research see: Fabrication and characterization of Fe nano-particles by sonochemistry method. Materials Letters, 2014;131():266-268. Materials Letters can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Materials Letters - www.elsevier.com/wps/product/cws_home/505672)
Our news journalists report that additional information may be obtained by contacting W.Q. Liu, University of Delaware, Dept. of Mat Sci & Engn, Newark, DE 19716, United States. Additional authors for this research include X.C. Hu, G.C. Hadjipanayis and M. Yue.
Keywords for this news article include: Newark, Delaware, United States, North and Central America, Materials Science
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