Open Access

ARTICLE

Probing SnSO₃/ZnSO₃ nanocomposites by optical and magnetic perspective

R. Gayathri^a, S. Shanmugha Soundare^b, K. Haritha^a, S. Ariponnammal^a,*

a Department of Physics, Gandhigram Rural Institute, Deemed To Be University, Gandhigram-624302, Dindigul District, Tamilnadu, India
b Centre for Nanoscience and Technology, Anna University, Chennai-600025, Tamilnadu, India

* Corresponding Author:

Chalcogenide Letters 2024, 21(12), 1001-1009. https://doi.org/10.15251/CL.2024.2112.1001

Received 07 October 2024; Accepted 06 December 2024;

Abstract

SnSO₃/ZnSO₃ nanocomposite has been synthesized using the hydrothermal process. The complete formation of the SnSO₃/ZnSO₃ nanocomposite is confirmed by XRD and EDAX. It displays a fascinating rectangular bar shape. The measured particle size is 100.4 nm. It will be a promising option for optoelectronic devices. Energy gap of the SnSO₃/ZnSO₃ nanocomposite is 5.85 eV. The refractive index of the nanocomposite through its energy gap is found to be 1.883. The ultraviolet (~387.2 nm) area of the PL emission spectrum exhibits the strong efficient emission, while the green (~522.1 nm) region and the red (~789.4 nm) region show weak and moderate emission, respectively. Radiative electronhole recombination is seen in the UV emission at 387.2 nm, which qualifies the contender for displays/projection-based applications. Emission peaks observed in the visible region is attributed to various defects Frenkel or Schottky defects, Tin or Zinc interstitials and oxygen vacancies. The finger print region's S-O, Zn-O, and Sn-O bands are confirmed by the accurately assigned FTIR bands. At 300K, the sample displays diamagnetic behaviour. Additionally, at 5K, it displays an intriguing super paramagnetic behaviour between -0.15 Tesla and 0.15 Tesla.

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Keywords

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