Abstract
A semiconductor compound, which portrays ferromagnetism with tunable optical and photoluminescence properties after a sensible doping of suitable dopant, is vital for modern spintronic and luminescent applications. In this sense, we fabricate CdS, Cd0.98Er0.02S, and Cd0.96Er0.04S nanoparticles (NPs) via an inexpensive co-precipitation way. No structural deformation was found in cubic CdS after Er (III) doping. The as-fabricated NPs demonstrated good crystallinity as well as slight changes in sizes varying 3 nm–7 nm. An X-ray photoelectron spectroscopy results confirmed that the impure-free nature of the prepared samples. A decreasing trend in the optical band gap was found by the increase in the doping level. The 1CdS NPs showed diamagnetic character, whereas the Er (III)-doped CdS NPs exhibited frail ferromagnetic character at room temperature, which slightly increased as a function of Er (III) concentration. Based on the literature, this is the initial magnetic report on the CdS:Er system and this will be very informative for the further magnetic investigations on the Er doping. Hence, the tunable optical and ferromagnetic magnetic properties of CdS:Er NPs demonstrated in this work may be beneficial for optoelectronic, solar cell and spintronic applications.
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25 June 2021
A Correction to this paper has been published: https://doi.org/10.1007/s00339-021-04702-7
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Acknowledgements
This work was supported by the National Research Foundation of Korea funded by the Ministry of Science, ICT and Fusion Research (NRF-20201G1A1014959) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2019R1I1A3A01056567). This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Fusion Research (2018R1D1A1B07040603) and BK21 FOUR project funded by the Ministry of Education, Korea (4199990113966). The authors (Abdulaziz A. Al-Kheraif and Darshan Devang Divakar) are grateful to the deanship of Scientific Research, King Saud University for funding through Vice Deanship of Scientific Research Chairs.
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Poornaprakash, B., Mangiri, R., Al-Kheraif, A.A. et al. Tunable room temperature ferromagnetism and optical bandgap of CdS:Er nanoparticles. Appl. Phys. A 127, 359 (2021). https://doi.org/10.1007/s00339-021-04508-7
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DOI: https://doi.org/10.1007/s00339-021-04508-7