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Persistent URL http://purl.org/net/epubs/work/54071696
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Record Id 54071696
Title Enhanced ferromagnetism in Cu-Substituted ZnO nanoparticles
Abstract Cu-substituted ZnO thin films are known to exhibit room-temperature ferromagnetism. Herein, we report a large enhancement of ferromagnetism in nanoparticles of Zn1−xCuxO (CZOs) at x ∼ 1/8. In addition to the magnetic moment arising from the Cu 3d9 spins, these nanoparticles provide a unique platform to produce a significant number of oxygen vacancies (VOs), which gives rise to a long-range ferromagnetic order due to the interaction with the spins of Cu 3d9 through the oxygen vacancies and Cu 3d9 ligand holes. Interestingly, the highest magnetization occurs in CZO with x ≈ 0.13. Thus, our results emphasize the importance of the interplay between the Cu 3d9 spins with oxygen vacancies and Cu 3d9 ligand holes in generating a long-range ferromagnetic order.
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Journal Article Mater Chem Phys 278 (2022): 125606. doi:10.1016/j.matchemphys.2021.125606 2022