NFLUENCE OF THE PRECIPITATINGAGENT/FERRC ONS MOLAR RATO ON THE SYNTHESS OF ZINC FERRTE NANOCRYSTALLINE POWIDERS
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
UFGNSM03_249
تاریخ نمایه سازی: 10 تیر 1396
Abstract:
In this work, Zinc ferrite nanoparticles were prepared by wet chemical co-precipitation method using NaOH solution as precipitating agent. Fe and Zn chloride aqueous solutions and the NaOH solution were added drop wise from two separate burettes into a reaction vessel containing 100mL of distilled water heated at 60°C. Then the resultant precipitates obtained after 2 hours aging washed and dried. The powders were characterized using X-ray diffractometery (XRD), field emission scanning electron microscopy (FSEM) and vibrating sample magnetometery (VSM) techniques. The influence of the precipitating agent/ferric ions molar ratio on the formation of zinc ferrite was investigated. The results showed that at the ratios of 7.5, the single phase zinc ferrite was formed with the crystallite size of 9 mm. The Magnetic measurements also showed that the prepared zinc ferrite powders were superparamagnet.
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Authors
M. EBRAHMI
Center of Excellence for Magnetic Materials, School of Metallurgy and Materials, Faculty of Engineering, University of Tehran, Tehran, Iran
S.A. SEYYED EBRAHMII
Center of Excellence for Magnetic Materials, School of Metallurgy and Materials, Faculty of Engineering, University of Tehran, Tehran, Iran, P. O. Box: ۱۱۱۵۵-۴۵۶۳, Tehran, Iran
R. RESI
Center of Excellence for Magnetic Materials, School of Metallurgy and Materials, Faculty of Engineering, University of Tehran, Tehran, Iran