Synthesis and Characterization of Ni_0.7Zn_0.3Fe₂O₄ and Mn_0.7Zn_0.3Fe₂O₄ Nanoparticles by Water-in-oil Microemulsion

Abstract

Ferrite is an important ceramic material with magnetic properties that are useful in many types of electronic devices. In this paper we synthesized nanostructured Ni_0.7Zn_0.3Fe₂O₄ and Mn_0.7Zn_0.3Fe₂O₄ with spinel structure in the system of water-in-oil microemulsion of water/Triton X–100/n-hexanol/cyclohexane. The result showed that nanoparticles with size in the range of 50–80 nm could be obtained by microemulsion method. FT-IR spectrum, XRD patterns and DTA curves revealed that the nanoparticles could be obtained via calcining its precursor at 500°C. The VSM plots showed that the ferrimagnetic behavior was expected for this type of magnetic material.

Keywords:

• Spinel ferrite
• microemulsion
• magnetic measurements
• Synthesis method

Funding

This work was supported by the National Natural Science Foundation of China (No. 21075026) and the Natural Science Fund of Anhui Province education Department (No. KJ2013B227, KJ2013B227).