Effects of Dy3+-doping on the band-gap widening and formation of mixed cubic and monoclinic phases of Sm2O3 nanoparticles

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dc.contributor.authorSain, Rachana
dc.contributor.authorRoy, Ayan
dc.contributor.authorKumar, Ajay
dc.contributor.authorAnu
dc.contributor.authorDeeksha
dc.contributor.authorKour, Pawanpreet
dc.contributor.authorSingh, Ravi Pratap
dc.contributor.authorYadav, Kamlesh
dc.date.accessioned2024-01-21T10:42:58Z
dc.date.accessioned2024-08-13T12:45:03Z
dc.date.available2024-01-21T10:42:58Z
dc.date.available2024-08-13T12:45:03Z
dc.date.issued2023-10-30T00:00:00
dc.description.abstractWe synthesized Sm2?xDyxO3 (where X = 0.00, 0.03, 0.06, 0.09, and 0.12) nanoparticles using a co-precipitation method and investigated their structural and optical properties. X-ray diffraction (XRD) results reveal that Dy3+-doping in Sm2O3 nanoparticles leads to the formation of a monoclinic polymorphic phase along with the cubic phase of Sm2O3 and its fraction increases with increasing Dy3+-doping concentration. The substitution of Dy3+ at the Sm3+ site converts the cubic Sm2O3 unit cells into distorted monoclinic Sm2?XDyXO3 unit cells. The average crystallite and nanoparticle sizes decrease with increasing Dy3+-doping concentration. Dy3+-ions act as particle size inhibitors, which is attributed to an increase in the segregation of Dy3+-dopant ions at the surface of the nanoparticles with increasing Dy3+-doping content. The peak appearing at 851�cm?1 in the Fourier transform infrared spectroscopy (FTIR) spectra confirms the formation of Sm2O3. Widening of the band gap (Eg) above the band gap of pure cubic Sm2O3 with Dy3+-doping concentration has been observed for X > 0.06, which is due to the Moss-Burstein and quantum size effects. � 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.en_US
dc.identifier.doi10.1007/s00339-023-07051-9
dc.identifier.issn9478396
dc.identifier.urihttp://10.2.3.109/handle/32116/3784
dc.identifier.urlhttps://link.springer.com/10.1007/s00339-023-07051-9
dc.language.isoen_USen_US
dc.publisherSpringer Science and Business Media Deutschland GmbHen_US
dc.subjectDoping effectsen_US
dc.subjectMoss�Burstein effecten_US
dc.subjectOptical propertiesen_US
dc.subjectSm<sub>2</sub>O<sub>3</sub>en_US
dc.subjectX-ray methodsen_US
dc.titleEffects of Dy3+-doping on the band-gap widening and formation of mixed cubic and monoclinic phases of Sm2O3 nanoparticlesen_US
dc.title.journalApplied Physics A: Materials Science and Processingen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

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