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Electronic structure, chemical bonding, optical, elastic and dynamical properties of MeB 2 compounds: Effect of transition metal Me = Sc, Ti and Zr

Computational Condensed Matter, ISSN: 2352-2143, Vol: 21, Page: e00406
2019
  • 14
    Citations
  • 0
    Usage
  • 2
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    2

Article Description

In present paper, the electronic structure, chemical bonding, optical, elastic and dynamical properties of MeB 2 compounds (Me = Sc, Ti and Zr) have been systematically investigated using the first principles calculations to show the effect of changing transition metal. Studied materials have metallic nature. Their chemical bondings are created by mixture of ionic and covalent character. The optical properties including reflectivity, absorption coefficient, refractive index, extinction coefficient, energy loss function and optical conductivity are deduced from calculated complex dielectric function. Obtained results show that these binaries are promising candidate for the application in optoelectronic devices. All three materials are brittle in nature. Their hardness decreases in order TiB 2 → ZrB 2 → ScB 2 due to the reduction of bond strength. The elastic anisotropy is also demonstrated. ScB 2, TiB 2 and ZrB 2 are dynamically stable due to that there is no negative frequency in their phonon dispersion curve.

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