Temperature-dependent vibrational properties of Sb x Sn1−x Se2 (x = 0, 0.1, 0.2 & 0.3) ternary alloys

Mohit Tannarana; Pratik Pataniya; G. K. Solanki; Sanjay A. Bhakhar; Som Narayan; K. D. Patel; Prafulla K. Jha; V. M. Pathak

doi:10.1140/epjp/s13360-019-00072-5

2022 Impact factor 3.4

EPJ PLUS - Condensed Matter and Complex Systems

Eur. Phys. J. Plus (2020) 135: 97
https://doi.org/10.1140/epjp/s13360-019-00072-5

Regular Article

Temperature-dependent vibrational properties of Sb_xSn_1−xSe₂ (x = 0, 0.1, 0.2 & 0.3) ternary alloys

Mohit Tannarana¹^,2^*, Pratik Pataniya¹, G. K. Solanki¹, Sanjay A. Bhakhar¹, Som Narayan³, K. D. Patel¹, Prafulla K. Jha³ and V. M. Pathak¹

¹ Department of Physics, Sardar Patel University, Vallabh Vidyanagar, Anand, 388120, India
² Shri A N Patel Post Graduate Institute of Science and Research, Anand, 388120, India
³ Department of Physics, Faculty of Science, M.S. University of Baroda, Vadodara, 39000, India

^* e-mail: mohittanna6@gmail.com

Received: 14 August 2019
Accepted: 19 October 2019
Published online: 23 January 2020

Abstract

We report the Raman spectroscopy of Sb_xSn_1−xSe₂ (x = 0, 0.1, 0.2, 0.3) single crystals in temperature range 78 K–468 K. The strong peak, assigning A_1g-vibrational mode, is found. The frequency of A_1g peak decreases on increasing Sb concentration. The downshift is observed on increasing the temperature from 78 to 468 K. For the quantitative analysis, temperature coefficient (χ _o), peak position at 0 K (ω ₀), Anharmonic constant (Г ₀), and peak broadening at 0 K (C) are computed from the temperature dependence of frequency and peak width. The present findings provide a good scientific significance to qualitative and quantitative analyses of transition metal dichalcogenides.