Characterization and magnetic properties of nanocrystalline CuFe 2O4, NiFe2O4, ZnFe2O 4 powders prepared by the Aloe vera extract solution

Paveena Laokul, Vittaya Amornkitbamrung, Supapan Seraphin, Santi Maensiri

Research output: Contribution to journalArticle

196 Scopus citations

Abstract

This study reports the simple synthesis of MFe2O4 (where M = Cu, Ni, and Zn) nanoparticles by a modified sol-gel method using high purity metal nitrates and aloe vera plant extracted solution. Using of aloe vera extract simplifies the process and provides an alternative process for a simple and economical synthesis of nanocrystalline ferrites. The obtained precursors were characterized by TG/DTA to determine the thermal decomposition and subsequently were cc at different temperatures in the range of 600-900 °C for 2 h to obtain the ferrite nanoparticles. The calcined samples were characterized by XRD, FT-IR, SEM, and TEM. All the prepared samples are polycrystalline and have spinel structure with crystallite sizes of 15-70 nm. The crystallite size increases with increasing the calcination temperature. Magnetic properties of the prepared ferrite samples were measured using Vibrating sample magnetometer (VSM). The room temperature magnetic behavior of as-prepared ferrite powders can be explained as the results of the three important factors: impurity phase of a-Fe2O3, cationic distribution in spinel structure, and the surface spin structure of nanoparticles.

Original languageEnglish (US)
Pages (from-to)101-108
Number of pages8
JournalCurrent Applied Physics
Volume11
Issue number1
DOIs
StatePublished - Jan 1 2011

Keywords

  • Electron microscopy
  • Ferrite
  • Magnetic properties
  • Nanoparticles
  • Synthesis
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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