Sol-gel synthesis and characterisation of (Nd, Cr) co-doped BiFeO3 nanoparticles

Pradeep Reddy Vanga, R. V. Mangalaraja, M. Ashok

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Bi0.95Nd0.05Fe1– xCrxO3 (x = 0, 0.01, 0.03, 0.05) samples are synthesised by the sol-gel method. The variation in structure, magnetisation, electrical and photocatalytic properties by Cr doping at Fe site in Bi0.95Nd0.05FeO3 samples is analysed. X-ray diffraction pattern confirms the formation of rhombohedral structure in all the samples. The crystallite size is calculated using the Scherrer relation and found to be in nanometre range. Kubelka-Munk theory is used to determine the direct band gap of the samples from reflectance spectra. The saturation magnetisation is found to enhance the concentration of chromium. Arrott-Belov-Kouvel plot confirms the ferromagnetic nature in the samples. The leakage mechanisms are studied to understand the influence of Cr concentration on the BFO. A good correlation exists between the leakage current and ferroelectric behaviour. Photocatalytic tests show degradation of methylene blue dye in the presence of H2O2. A drastic decrease in photocatalytic activity is observed with the concentration of Cr.

Original languageEnglish
Pages (from-to)1348-1359
Number of pages12
JournalJournal of Experimental Nanoscience
Volume11
Issue number17
DOIs
StatePublished - 21 Nov 2016
Externally publishedYes

Keywords

  • ferroelectric
  • leakage current density
  • magnetisation
  • photocatalytic
  • sol-gel

Fingerprint

Dive into the research topics of 'Sol-gel synthesis and characterisation of (Nd, Cr) co-doped BiFeO3 nanoparticles'. Together they form a unique fingerprint.

Cite this