Mn2FeSi: An antiferromagnetic inverse-Heusler alloy
Mn2FeSi: An antiferromagnetic inverse-Heusler alloy
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DOI：
10.1016/j.jallcom.2020.153770
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发表时间：
2020-05-15
影响因子：
6.2
通讯作者：
Mazumdar, Dipanjan
中科院分区：
文献类型：
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作者：
Aryal, Anil;Bakkar, Said;Mazumdar, Dipanjan
寻找具有高自旋极化的低磁矩磁性材料对于新兴的自旋电子学应用是重要的。在这项工作中，我们进行了详细的生长和表征沿着与互补的第一性原理计算，以调查的结构和磁性的Mn 2FeSi，这是一个有前途的逆Heusler材料。我们证实，Mn 2FeSi采用立方反Heusler结构，在良好的协议与理论。的磁性和电阻率测量结果表明，与48 K的尼尔温度的反铁磁行为，这是与以前的实验报告一致。我们发现在一定的生长条件下，可以稳定一个具有较高有序温度（150-200 K）的低矩态。支持计算表明，尼尔型反铁磁态是非常接近的亚铁磁基态的能量。我们的工作提供的证据表明，Mn 2FeSi可能是有趣的探索新的应用与低矩材料，但有序温度低，可行的实际应用。(C)2020爱思唯尔B. V.保留所有权利。
Search for low-moment magnetic materials with high spin-polarization is important for emerging spintronics applications. In this work, we have conducted detailed growth and characterization along with complementary first-principles calculations to investigate the structure and magnetism of Mn2FeSi, which is a prospective inverse-Heusler material. We confirm that Mn2FeSi adopts a cubic inverse-Heusler structure, in excellent agreement with theory. The magnetic and resistivity measurements show an antiferromagnetic behavior with a Neel temperature of 48 K, which is consistent with prior experimental reports. We find that a low-moment state with higher ordering temperature (150-200 K) can be stabilized under certain growth conditions. Supporting calculations show that Neel-type antiferromagnetic states are energetically very close to the ferrimagnetic ground state. Our work provides evidence that Mn2FeSi may be interesting for exploring newer applications with low-moment materials, but the ordering temperatures are low for viable practical applications. (C) 2020 Elsevier B.V. All rights reserved.