Solubility Enhancement of Fe in ZnO Nanoparticles Prepared by Co-Precipitation Method

Musharaf M., Karamat S., Hassan M. U., Khalique U., ORAL A., Behjat A. B., ...More

Journal of Superconductivity and Novel Magnetism, vol.34, no.10, pp.2633-2642, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 10
  • Publication Date: 2021
  • Doi Number: 10.1007/s10948-021-05904-z
  • Journal Name: Journal of Superconductivity and Novel Magnetism
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.2633-2642
  • Keywords: Dilute magnetic semiconductors, Zinc oxide nanoparticles, Fe doped ZnO nanoparticles, Ferromagnetic behaviour, Burstein-Moss effect, Enhanced solubility and Band transitions, DOPED ZINC-OXIDE, OPTICAL-PROPERTIES, THIN-FILMS, MAGNETIC-PROPERTIES, RAMAN-SCATTERING, FERROMAGNETISM, SEMICONDUCTOR, TEMPERATURE, PHOTOCONDUCTIVITY, NANOSTRUCTURES
  • Middle East Technical University Affiliated: Yes


© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.Crystalline ZnO offers an excellent host matrix to create a dilute magnetic semiconductor (DMS) owing to its facile Zn-atom substitution with the transition metal dopant atom. The exchange interactions between the spin of the dopant atoms and the carriers in the ZnO matrix results in the room-temperature ferromagnetic order in the entire lattice. In this work, we report on the enhanced solubility (doping) of Fe atoms in ZnO matrix. Zn1-x FexO DMS nanoparticles were synthesized with different doping concentrations (x = 0.01, 0.05, 0.20, 0.22, and 0.25) via a modified version of co-precipitation method, in which the precursors’ solution was heated at 60 ℃ during the stirring process. Only the wurtzite phase was obtained for all Zn1-x FexO samples in X-ray diffraction, and no secondary phase was observed, which supports the idea of an enhanced solubility limit of Fe doping up to 25%. A systematic broadening of the Raman characteristic peak at 525 cm−1 associated with Fe substitution across the entire range of doping accompanied with the suppression of ZnO peak at 371cm−1 and 435 cm−1, supporting the enhanced doping effect further. The bandgap exhibited a systematic trend — it first increased from 3.13 eV for undoped to 3.23 for x = 0.1 and dropped to the value of 2.94 for the highest concentration (x = 0.25) with few in band transitions for high doping. VSM results showed magnetic behavior for all the doped samples at room temperature.