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

Date

2021-01-01

Author

Musharaf, Muhammad
Karamat, Shumaila
Hassan, Muhammad Umair
Khalique, Uzma
Oral, Ahmet
Behjat, Arash Badami
Akram, Rizwan
Almohaimeed, Ziyad

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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.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85108587032&origin=inward
https://hdl.handle.net/11511/91215

Journal

Journal of Superconductivity and Novel Magnetism

DOI

https://doi.org/10.1007/s10948-021-05904-z

Collections

Department of Physics, Article

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Citation Formats

M. Musharaf et al., “Solubility Enhancement of Fe in ZnO Nanoparticles Prepared by Co-Precipitation Method,” Journal of Superconductivity and Novel Magnetism, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85108587032&origin=inward.