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ARTICLE

Morphological study of bulk sample averse to thin films for a quaternary glassy alloy system

P. Kaushik^a,*, A. Devi^b, H. Singh^a

a Department of Applied Sciences, The North Cap University, Gurugram, India
b Department of Applied Sciences, Amity University, Gurugram, India

* Corresponding Author:

Chalcogenide Letters 2025, 22(3), 197-204. https://doi.org/10.15251/CL.2025.223.197

Received 22 November 2024; Accepted 28 February 2025;

Abstract

The structural properties of bulk as well as thin films of nanostructured Bi₁Te₁₅Se_84-x Pb_x (0 ≤ x ≤ 8) glassy alloys has been studied in this paper. Conventional melt quenching method is employed to prepare the samples of Bi₁Te₁₅Se_84-x Pb_x (0 ≤ x ≤ 8) alloys. Thin films with thickness of approximately 158nm of the obtained bulk compositions were deposited on dry cleaned glass substrates by thermal evaporation technique. The structural characterization was carried out using XRD and SEM. Energy dispersive X-ray spectroscopy (EDX) indicates that samples are nearly stoichiometric. X-ray diffraction patterns indicate that they are in the crystalline state. SEM study indicates the formation of snow flaky structures with agglomeration with the rise in lead content in the sample. Raman spectroscopy is used to study how changes in composition due to Pb doping affect lattice vibrations and electronphonon interactions.

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Keywords

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