bsuirДоклады БГУИРDoklady BGUIR1729-76482708-0382БГУИР10.35596/1729-7648-2021-19-8-45-49bsuir-3244Research ArticleЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКАELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICSAb initio calculations of electronic band structure of CdMnS semimagnetic semiconductorsAb initio calculations of electronic band structure of CdMnS semimagnetic semiconductorsMehrabovaМ. А.MehrabovaM. А.

Matanat Ahmed Mehrabova  – D.Sc.,  Associated  Professor,  Leading  Researcher  

AZ1143, Azerbaijan, Baku, B.Vahabzade St., 9

PanahovN. T.PanahovN. T.

Azerbaijan University of Architecture and Construction 

Natig T. Panahov –  PhD., Associated Professor, Leading Researcher

Baku

HasanovN H.HasanovN. H.

Niyazi H. Hasanov – Lecturer at the Department of Physics 

Baku

Institute of Radiation Problems of Azerbaijan National Academy of SciencesInstitute of Radiation Problems of Azerbaijan National Academy of SciencesAzerbaijan University of Architecture and ConstructionAzerbaijanBaku State UniversityBaku State University2021020120221984549Copyright © Mehrabova М.А., Panahov N.T., Hasanov N.H., 20222022Mehrabova М.А., Panahov N.T., Hasanov N.H.Mehrabova M.А., Panahov N.T., Hasanov N.H.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.bsuir.by/jour/article/view/3244

This work is devoted to theoretical investigations of Cd1-xMnxS semimagnetic semiconductors (SMSC). The purpose of this work was to calculate the electronic band structure of ideal and defective Cd1- xMnxS SMSC in both antiferromagnetic (AFM) and ferromagnetic (FM) phases. Ab initio, calculations are performed in the Atomistix Toolkit (ATK) program within the Density Functional Theory (DFT) and Local Spin Density Approximation (LSDA) on Double Zeta Double Polarized (DZDP) basis. We have used Hubbard U potential UMn = 3.59 eV for 3d states for Mn atoms. Supercells of 8 and 64 atoms were constructed. After the construction of Cd1-xMnxS (x = 6.25 %; 25 %) supercells and atom relaxation and optimization of the crystal structure were carried out. Electronic band structure and density of states were calculated, the total energy has been defined in antiferromagnetic (AFM) and ferromagnetic (FM) phases. Our calculations show that the band gap increases with the increase in Mn ion concentration. It has been established that Cd or S vacancy in the crystal structure leads to the change of band gap, Fermi level shifts towards the valence or conduction band.

This work is devoted to theoretical investigations of Cd1-xMnxS semimagnetic semiconductors (SMSC). The purpose of this work was to calculate the electronic band structure of ideal and defective Cd1- xMnxS SMSC in both antiferromagnetic (AFM) and ferromagnetic (FM) phases. Ab initio, calculations are performed in the Atomistix Toolkit (ATK) program within the Density Functional Theory (DFT) and Local Spin Density Approximation (LSDA) on Double Zeta Double Polarized (DZDP) basis. We have used Hubbard U potential UMn = 3.59 eV for 3d states for Mn atoms. Supercells of 8 and 64 atoms were constructed. After the construction of Cd1-xMnxS (x = 6.25 %; 25 %) supercells and atom relaxation and optimization of the crystal structure were carried out. Electronic band structure and density of states were calculated, the total energy has been defined in antiferromagnetic (AFM) and ferromagnetic (FM) phases. Our calculations show that the band gap increases with the increase in Mn ion concentration. It has been established that Cd or S vacancy in the crystal structure leads to the change of band gap, Fermi level shifts towards the valence or conduction band.

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The authors declare that there are no conflicts of interest present.