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First principles study of pressure-induced magnetic transition in CrN

机译:CrN压力感应磁跃变的第一原理研究

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First principles calculation was performed using tight-binding LMTO method with local density approximation (LDA) and atomic sphere approximation (ASA) to understand the electronic properties of chromium nitride. The equilibrium geometries, the magnetic moment, the electronic band structure, the total and partial DOS are obtained under various pressures and are analyzed in comparison with the available experimental data. The most stable structure of CrN is NaCl structure in the FM state. A pressure-induced second order magnetic phase transition from ferromagnetic (FM) to non-magnetic (NM) at very high pressure of 0.5549 Mbar is predicted. Our results indicate that CrN can be used as a hydrogen storage material.
机译:使用紧密结合的LMTO方法,局部密度近似(LDA)和原子球近似(ASA)进行第一原理计算,以了解氮化铬的电子性质。在各种压力下获得了平衡几何形状,磁矩,电子能带结构,总和部分DOS,并与可用的实验数据进行了比较。 CrN最稳定的结构是处于FM状态的NaCl结构。预测在0.5549 Mbar的极高压力下,压力诱导的二阶磁性相从铁磁性(FM)转变为非磁性(NM)。我们的结果表明,CrN可用作储氢材料。

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