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ARTICLE

Structural, morphological, optical and low temperature magnetic studies on SnSeO₃/ZnSeO₃ nanocomposite

N. G. Basil Ralph^a, S. Shanmugha Soundare^b, R. Harshinee^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(6), 483-491. https://doi.org/10.15251/CL.2024.216.483

Received 27 March 2024; Accepted 17 June 2024;

Abstract

Nanocomposite SnSeO₃/ZnSeO₃ has been synthesized by hydrothermal method. EDAX and XRD confirm the perfect formation of SnSeO₃/ZnSeO₃ nano composite. It shows an interesting morphology of rectangular bar. Particle size is determined as 137.3nm. It is an effective applicant for applications in optoelectronic field. The energy gap of SnSeO₃/ZnSeO₃ nanocomposite is 5.52 eV. Urbach energy value obtained is 0.0635 eV. Refractive index obtained from optical energy gap is 1.926. PL emission spectrum obtains a strong efficient emission in UV (~387.7 nm) region, weak emission in green (~520.7 nm) region, and moderate emission in red (~788.7 nm) region. The UV emission at 387.7 nm shows radiative electron-hole recombination and it makes the candidate suitable for display applications. The emission peaks in the visible range may be attributed to different surface imperfections of Schottky and Frenkel kinds, oxygen vacancies and Sn – interstitials or Zn -interstitials. The FTIR bands are well assigned and confirms Se-O, ZnO, Sn-O bonds in finger print region. The sample exhibits diamagnetic nature at 300K and 5K. It also exhibits interesting super paramagnetic nature at 5K between -0.15Tesla to 0.15Tesla.

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Keywords

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