• $Ab-initio$ calculations on structural, electronic, half-metallic and optical properties of Co-, Fe-, Mn- and Cr-doped Ba$_2$LuTaO$_6$

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/095/0038

• # Keywords

Ba$_2$LuTa$_{0.75}$TM$_{0.25}$O$_6$; magneto-optic; spintronics; ab-initio calculations.

• # Abstract

Full potential-linearised augmented plane wave (FP-LAPW) method is used to study the structural, electronic, half-metallic and optical properties of Ba$_2$LuTaO$_6$ doped with d-block atoms Co, Fe, Mn and Cr using density functional theory (DFT) technique. Ba$_2$LuTa$_{0.75}$TM$_{0.25}$O$_6$ supercells were constructed by doping 3d transition metal atoms Co, Fe, Mn and Cr with 2.5% of concentration in Ba$_2$LuTaO$_6$ host compound. The possibility of half-metallic ferromagnetism in Ba$_2$LuTa$_{0.75}$TM$_{0.25}$O$_6$ (TM = Co, Fe, Mn and Cr) was analysed by electronic band structure and density of state calculations. We found that Ba$_2$LuTa$_{0.75}$(Co and Cr)$_{0.25}$O$_6$ alloys exhibit complete half-metallic characteristics with a total spin moment of 2.00 and 1.00 $\mu_B$ and direct band gap of $Eg ↑= 0.52$ eV and $Eg ↓= 1.60$ eV, respectively. These results may be of interest for spintronics applications. Moreover, the optical properties of the material in question are also examined and discussed.

• # Author Affiliations

1. Laboratory for Developing New Materials and their Characterizations, University of Setif 1, Setif, Algeria
2. Department of Physics, Faculty of Science, University of M'sila, 28000 M'sila, Algeria

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019

Click here for Editorial Note on CAP Mode

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