Lattice Dynamics and thermodynamic Responses of XNbSn Half-Heusler Semiconductors: A First-Principles Approach
Keywords:
Density functional theory; Density functional perturbation theory; Half-Heusler semiconductor; Lattice dynamics; Thermodynamic properties; Phonon dispersionsAbstract
In this work, we have evaluated how CoNbSn, IrNbSn, and RhNbSn half Heusler alloys respond to temperature change and the accompanying lattice vibrations as a cubic crystal. There are reports in the literature for CoNbSn with which we compared our result; there are, however, no reports for the other two alloys except for their Debye temperature obtained via machine learning, and our results compare well. Considering that results in the literature for IrNbSn and RhNbSn are scanty, we first computed the alloys' structural and electronic properties to establish their structural stability using the density functional theory and generalised gradient approximation as implemented in the quantum espresso computational suite. We confirmed the equilibrium lattice structure by exploring the three possibilities for a half Heusler alloy and fitting the results to the state's Murnaghan equation. The negative formation energies obtained supports experimental simulation of the alloys. Results from the lattice dynamics and thermodynamic evaluation show that the alloys favour ionic bonding and are ductile. The Debye temperature positions IrNbSn to be the most promising material for thermoelectric application because it has the least Debye temperature; hence it is supposed to have the lowest thermal conductivity. The Dulong-Petit law is obeyed at high temperature as expected. The phonon dispersion and density of states show that the d orbitals of Co and Nb are the significant contributors to the dispersions at both the acoustic and optical modes of the alloys.
Published
How to Cite
Issue
Section
Copyright (c) 2021 Journal of the Nigerian Society of Physical Sciences

This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Similar Articles
- Afis Saliu, Semiu Oladipupo Oladejo, On Lemniscate of Bernoulli of q-Janowski type , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 4, November 2022
- Arezu Jahanshir, Jalil Naji, Relativistic correction on bottomia within the gaussian basis function method , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- Ayomide Labulo, Elijah Temitope Adesuji, Charles Ojiefoh Oseghale, Elias Emeka Elemike, Adamu Usman, Akinola Kehinde Akinola, Enock Olugbenga Dare, Effect of benzophenone on the physicochemical properties of N-CNTs synthesized from 1-ferrocenylmethyl (2-methylimidazole) catalyst , Journal of the Nigerian Society of Physical Sciences: Volume 2, Issue 4, November 2020
- G. Kamarajan, D. Benny Anburaj, V. Porkalai, A. Muthuvel, G. Nedunchezhian, Effect of temperature on optical, structural, morphological and antibacterial properties of biosynthesized ZnO nanoparticles , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 3, August 2022
- Imosobomeh L. Ikhioya, Eli Danladi, Okoli D. Nnanyere, Abdulazeez O. Salawu, Influence of Precursor Temperature on Bi Doped ZnSe Material via Electrochemical Deposition Technique for Photovoltaic Application , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 1, February 2022
- O. Amos, T. E. Odetoye, D. S. Ogunniyi, Preparation and characterization of Zinc metal soap from shea butter (Vitellaria paradoxa) , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 4, November 2021
- Olayiwola Babarinsa, Olalekan Ihinkalu, Veronica Cyril-Okeme, Hailiza Kamarulhaili, Arif Mandangan, Azfi Zaidi Mohammad Sofi, Akeem B. Disu, Application of hourglass matrix in Goldreich-Goldwasser-Halevi encryption scheme , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 4, November 2022
- A. H. Labulo, A. D. Terna, O. F. Oladayo, H. Ibrahim, N. S. Tanko, R. A. Ashonibare, J. D. Opeyemi, Z. Tywabi-Ngeva, Photocatalytic and antibacterial activities of green-mediated Khaya senegalensis-silver nanoparticles and oxidized carbon nanotubes , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 3, August 2023
- Pushap Lata Sharma, Mohini Kapalta, Ashok Kumar, Deepak Bains, Sumit Gupta, Pankaj Thakur, Electrohydro dynamics convection in dielectric rotating Oldroydian nanofluid in porous medium , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 2, May 2023
- Ogechi Regina Amanso, Jeconia Okelo Abonyo, Phineas Roy Kiogora, Obiora Cornelius Collins, A novel mathematical model for transmission dynamics of HPV and cervical cancer progression with cancer-reliant awareness , Journal of the Nigerian Society of Physical Sciences: Volume 8, Issue 2, May 2026 (In Progress)
You may also start an advanced similarity search for this article.

