论文标题
在室温下获得补偿的无稀土非胶质金属铁磁铁MN4-XZXN
Rare-earth-free noncollinear metallic ferrimagnets Mn4-xZxN with compensation at room temperature
论文作者
论文摘要
补偿的铁磁铁，例如抗铁磁铁，没有显示出净磁化，但是它们的传输和磁化特性类似于铁磁体的磁化，从而为高频旋转型和低能损失通信的应用创造了机会。在这里，我们研究了MN4N的非共线性铁磁自旋结构的修改，该修饰是通过多种金属取代Z（Z = Cu -ge -ge和ag -sn）在室温下实现补偿的。 The noncollinear frustrated 2.35 Bohr magneton moments of Mn on 3c sites of the (111) kagome planes tilt about 20 degree out-of-plane in Mn4N and are easily influenced by the substitutions on 1a sites, leading to different efficiency of compensation in Mn4-xZxN that increases gradually from group 11 (Cu, Ag) to group 14 (Ge, Sn) with increasing number of valance electrons.第五阶段的要素比由于晶格扩展而引起的第四个时期的薪酬效率更高。锰位点矩由z确定，轨道杂交，电荷转移和倾斜角，通过约束密度功能理论分析。建议在室温下进行补偿的GA化合物x = 0.26用于高频旋转式应用。
Compensated ferrimagnets, like antiferromagnets, show no net magnetization but their transport and magneto-optic properties resemble those of ferromagnets, thereby creating opportunities for applications in high-frequency spintronics and low-energy loss communications. Here we study the modification the noncollinear ferrimagnetic spin structure of Mn4N by a variety of metallic substitutions Z (Z = Cu - Ge and Ag - Sn) to achieve compensation at room temperature. The noncollinear frustrated 2.35 Bohr magneton moments of Mn on 3c sites of the (111) kagome planes tilt about 20 degree out-of-plane in Mn4N and are easily influenced by the substitutions on 1a sites, leading to different efficiency of compensation in Mn4-xZxN that increases gradually from group 11 (Cu, Ag) to group 14 (Ge, Sn) with increasing number of valance electrons. Elements from the 5th period are more efficient for compensation than those from the 4th period due to lattice expansion. The manganese site moments are determined by Z, orbital hybridization, charge transfer and the tilt angle, analyzed by constrained density functional theory. The Ga compound with compensation at room temperature for x = 0.26 is recommended for high-frequency spintronic applications.
