Paper Title:
Study on Preparation of Ultrafine NiFe2O4 Particles by Microemulsion Method
  Abstract

Ultrafine NiFe2O4 particles with spinel structure were prepared in the system of water-in-oil microemulsion of water/Triton X–100/n-hexanol/cyclohexane. The effects of calcining temperature and the other operation conditions were systematically discussed based on the techniques of SEM, XRD, VSM and so on. The result showed that NiFe2O4 nanoparticles, with a narrow size distribution(30-70nm), could be obtained by microemulsion method. The crystal grain diameter of the ultrafine NiFe2O4 particles could be enhanced with the improvement of the calcining temperature, the molar ratio of water to surfactant (w=[H2O]/ [surfactant]) and the concentration of Fe3+(or Ni2+), respectively. The VSM plots showed that the ferrimagnetic behavior was expected for this type of magnetic material. The XRD patterns and DTA-TG curves revealed that the optimal calcining temperature of NiFe2O4 sample was at around 500°C. The relation between the average particle size (D) and the value of w could be expressed as D=13.911+0.2628w. Moreover, it was indicated that low concentration of Fe3+(or Ni2+) was beneficial to the formation of small and regular NiFe2O4 particles.

  Info
Periodical
Key Engineering Materials (Volumes 428-429)
Edited by
Yuan Ming Huang
Pages
511-514
DOI
10.4028/www.scientific.net/KEM.428-429.511
Citation
L. Y. Zhang, H. S. Li, H. M. Guan, D. C. Zhu, "Study on Preparation of Ultrafine NiFe2O4 Particles by Microemulsion Method", Key Engineering Materials, Vols. 428-429, pp. 511-514, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jintao He, Tian Ma, Yong Huang, Jin Long Yang
Abstract:In this paper, a W/O microemulsion system composed of cyclohexane / water / TritonX-100 / hexyl alcohol is adopted to prepare ultrafine...
977
Authors: Chun Yang, Jun Ying Zhang, Hai Bing Feng, Wei Chang Hao, Tian Min Wang
Abstract:Y2O3:Eu3+ thin film was synthesized by sol-gel method with inorganic salt raw materials, and the crystal structure and luminescent...
593
Authors: Zi Feng Liu, Xin Wang, Yan Sheng Yin, Qiang Liu
Abstract:Nanometer LaPO4 powders were synthesized by liquid-liquid direct precipitation method. La(NO3)3•6H2O and (NH4)3PO4•3H2O were used as raw...
2231
Authors: Jian He Hong, Chun Fang Bai, Gang He, Ming Zhong He, Hai Feng Li, Xin Yan Sun, Yan Fen Wang
Chapter 9: New Energy Materials and Environmental Materials
Abstract:Positive-electrode material LiFePO4/C was prepared using FePO4•2H2O as raw material via a rheological phase...
1689
Authors: Chun Lin Fu, Meng Huo, Wei Cai, Xiao Ling Deng
Abstract:BiFeO3 powders were prepared by sol-gel process and calcined at different temperatures. The DTA curve shows an obvious exothermic...
142