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Structural, electronic, optical and magnetic properties of EuO and DyO compounds: ab initio study

机译:EUO和Dyo化合物的结构,电子,光学和磁性特性:AB Initio研究

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摘要

In this manuscript, we discussed an ab initio analysis of the structural, electronic, optical and magnetic properties of LnO (Ln = Eu, Dy) compounds. Our assessments were performed by the augmented plane wave method FP LAPW founded on the DFT (density functional theory) and introduced in the Wien2k calculation code. This investigation of the electronic band, structural, optical and magnetic properties were performed using a combination of modified Becke-Johnson exchange potential plus GGA + U-mBJ for exchange-correlation potential. In our study, the ferromagnetic behavior of the two compounds is very clear with magnetic moments of around 7 mu B for EuO and 5 mu B for DyO. The structure transitions for these materials from B1 to B2 are possible at high pressures and the calculation of the band structure shows that DyO has a direct gap (X-X).
机译:在该稿件中,我们讨论了LNO(LN = EU,Dy)化合物的结构,电子,光学和磁性的AB初始分析。 我们的评估是由在DFT(密度函数理论)上的增强平面波方法FP LAPW进行,并在Wien2K计算代码中引入。 使用改性的BECKE-JOHNSON EXCHANCE潜在加上GGA + U-MBJ的组合进行了对电子频带,结构,光学和磁性的研究,用于交换相关电位。 在我们的研究中,两种化合物的铁磁性行为非常清晰,磁性时刻为大约7亩,用于达到50亩。 从B1至B2的这些材料的结构转变在高压下可以进行高压,并且频带结构的计算表明,Dyo具有直接间隙(X-X)。

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  • 来源
    《Phase Transitions》 |2020年第9期|共12页
  • 作者单位

    Univ Tahri Mohamed Fac Sci Exactes Lab Dev Energies Renouvelables &

    Leurs Applicat Z Bechar Algeria;

    Univ Tahri Mohamed Fac Sci Exactes Lab Dev Energies Renouvelables &

    Leurs Applicat Z Bechar Algeria;

    Univ Tahri Mohamed Fac Sci Exactes Lab Dev Energies Renouvelables &

    Leurs Applicat Z Bechar Algeria;

    Univ Tahri Mohamed Fac Sci Exactes Lab Dev Energies Renouvelables &

    Leurs Applicat Z Bechar Algeria;

    ENP Oran Lab Microphys &

    Nanophys LaMiN Oran Algeria;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;
  • 关键词

    FP-LAPW; GGA plus U-mBJ; magnetic moment; phase transition;

    机译:FP-LAPW;GGA加U-MBJ;磁矩;阶段过渡;

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