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    • Keywords


      KCaN2 film; density functional theory; half-metallic property; thermoelectric property.

    • Abstract


      Based on the density functional theory (DFT), the structural, electronic, optical, magneto-optical and thermoelectric properties of KCaN$_2$-K, KCaN$_2$-Ca, KCaN$_2$-N Heuslerenes have been discussed. Energy changes in the volume of these compounds indicate the presence of their ground-state points. These three structures, KCaN$_2$-K, KCaN$_2$-Ca and KCaN2-N have magnetic moments 3.0, 3.0 and 1.0μB. The electronic results indicated that the KCaN2-K Heuslerene is a magnetic semiconductor and the other two are half-metallic with 100% spinpolarisation. Optical studies showed that in both directions of the incident light (along the x- and z-axes), these compounds have semiconductor behaviour.The highest light response occurs inKCaN2-K Heuslerene at the visible edge.KCaN2-Ca and KCaN$_2$-N Heuslerenes have the lowest optical energy loss function in the IR and visible regions. Also, magnetic behaviour of the KCaN$_2$-K, KCaN$_2$-Ca and KCaN2-N Heuslerenes causes a magnetic response tolight in theUVedge region and at higher energies to control the Kerr angle rotation and magnetic polarisation of light.

    • Author Affiliations



      1. Department of Physics, Ardabil Branch, Islamic Azad University, Ardabil, Iran
      2. Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran 14778-93855, Iran
      3. Department of Physics, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
    • Dates

  • Pramana – Journal of Physics | News

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