Sm2O3 modulated structural, optical, thermal and electrical properties of LiBaBO3 glasses

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-24 DOI:10.1016/j.optmat.2025.116978

B. Ajay Kumar , B. Sreenivas , P. Indira , A.K. Bhatnagar , P. Hima Bindu

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引用次数: 0

Abstract

Structural, optical, thermal and electrical properties of (1-x)[50B₂O₃–30Li₂O–20BaO]-xSm₂O₃ glasses [where x=0, 0.2, 0.4, 0.6, 0.8 and 1.0 mol%], synthesized by using a traditional melt-quenching technique, are reported in this paper. XRD, SEM/EDX studies on these glasses confirm the glassy structure and also their elemental composition. The densities of the samples, declined from 3.094 to 3.045 g/cm³, as the concentration of the dopant Sm₂O₃ increased, while the molar volume increased from 24.059 to 24.986 cm³/mol. FTIR, Raman spectra and UV–Vis spectra of these glasses to determine their optical characteristics. The direct and indirect band gap energies of the glass samples varied in the ranges of 3.99–3.74 eV and 3.01–2.71 eV, respectively. A decline in the Urbach energy from 0.43 to 0.32 eV is observed with increase of the dopant. The obtained results are discussed with reference to the structural changes in the glass network. The glass transition temperature increased by increasing the dopant concentration and the heating rate according to the DSC analysis of the formed glasses. The activation energy of the glass transition also increased with the dopant concentration. The variation of the DC conductivity with temperature was studied to understand electronic transport phenomena in these glasses.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.