Impact of cobalt doping on structural and magnetic properties of zinc oxide nanocomposites synthesized by mechanical ball-milling method

• Published in: Colloid and interface science communications Vol. 48; no. C; p. 100611
• Main Authors: Akgul, Guvenc, Akgul, Funda Aksoy
• Format: Journal Article
• Language: English
• Published: United States Elsevier B.V 01.05.2022; Elsevier
• Subjects: Chemistry; Composite materials; Crystal structure; EXAFS; INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Materials Science; Microstructure; Nanostructured materials; Science & Technology - Other Topics; X-ray diffraction; X-ray diffraction; Composite materials; Microstructure; Nanostructured materials; EXAFS; Crystal structure
• ISSN: 2215-0382; 2215-0382
• DOI: 10.1016/j.colcom.2022.100611

A series of zinc oxide (ZnO) semiconductor nanocomposite samples doped with different concentrations of cobalt (Co) were successfully synthesized via simple and highly effective mechanical ball-milling method using suitable precursors. All doped nanocomposites crystallized in hexagonal wurtzite formation of ZnO. No alteration in the wurtzite structure, with no evidence of any segregated secondary phase(s) was detected with increasing doping concentrations. This result unambiguously verified the substitution of Zn2+ sites by Co2+ ions in the ZnO host lattice for different doping concentrations. Moreover, room temperature ferromagnetic behavior was observed in all doped nanocomposite samples in the reported work. Present study clearly shows that mechanical ball-milling is a facile, inexpensive, eco-friendly method to synthesize crystalline and magnetic Co doped ZnO nanocomposites for next generation spin-based devices. [Display omitted] •Co doped ZnO nanocomposites were simply synthesized by ball-milling method.•Microstructural parameters of synthesized nanocomposites were determined by XRD.•Local structural parameters for synthesized nanocomposites were obtained by XAS.•Obtained results will be a key for development of Co doped ZnO based applications.