The current study is purposed to investigate the magnetic- and electronic-properties of Zn_1-2xCr_xTi_xSe and Zn_1-2xCr_xTi_xTe systems by means of Ab initio and Monte Carlo calculations. We have predicted that the two systems show ferromagnetic halfmetallic behavior with 100% spin polarization at the Fermi level and their ferromagnetic stability is attributed to the double exchange coupling. Our calculations suggest further that these compounds exhibit a 2^nd order ferromagnetic transition with high Curie temperature. Thus, (Zn, Cr, Ti)Se and (Zn, Cr, Ti)Te compounds are strong candidates for spintronic devices, especially for magnetic random access memories (MRAM) based on the spin transfer torque.

当前的研究旨在通过从头算和蒙特卡洛计算研究Zn _1-2x Cr _x Ti _x Se和Zn _1-2x Cr _x Ti _x Te系统的磁性和电子性质。我们已经预测到，这两个系统在费米能级下具有100％自旋极化的铁磁半金属行为，并且它们的铁磁稳定性归因于双交换耦合。我们的计算进一步表明，这些化合物表现出^第二居里温度高的铁磁跃迁。因此，（Zn，Cr，Ti）Se和（Zn，Cr，Ti）Te化合物很适合用于自旋电子器件，尤其是基于自旋传递转矩的磁性随机存取存储器（MRAM）。