Effect of iron doping on ESR and Raman spectra of SnO2 nanomaterials

Sangaraju Sambasivam, Ihab M. Obaidat

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

Iron doped tin oxide magnetic semiconductor nanoparticles, Sn1-xFexO2 with x = 0.0, 0.1, 0.2, and 0.3% were prepared by the sol-gel method. The X-ray diffraction patterns for all samples display the rutile SnO2 structure with no impurity peaks. At room temperature, electron spin resonance (ESR) spectra characteristic to Fe3+ was observed in all samples with broad and small intensity peaks. The shift of the ESR signal to lower fields and the change in the line width are attributed to the anisotropy in the non-spherical particles and to the enhanced dipolar magnetic interactions with Fe3+ concentrations. The Raman spectrum of pure and Fe doped SnO2 nanoparticles was found to be of the rutile phase structure (Eg, A1g, and B2g). The characteristic, active modes at 320 and 690 cm-1 appeared in Raman spectrum, in some cases the bands were broadened in due to variable laser power sources. The broadening of the Eg mode is attributed to oxygen vacancies and nanosize effects.

Original languageEnglish
Pages (from-to)587-590
Number of pages4
JournalMaterials Today: Proceedings
Volume28
DOIs
Publication statusPublished - 2019
Event2nd International Conference on Recent Advances in Materials and Manufacturing Technologies, IMMT 2019 - Dubai, United Arab Emirates
Duration: Nov 20 2019Nov 22 2019

Keywords

  • Dipolar interactions
  • ESR
  • Magnetic semiconductor
  • Nanoparticles
  • Raman spectra

ASJC Scopus subject areas

  • Materials Science(all)

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