Abstract Fe2MnSn compound was prepared in the form of polycrystalline ingot by arc-melting. In contrast to the theoretical predictions of stable tetragonal Heusler compound, the material crystallizes in a hexagonal DO19 crystal structure and orders ferromagnetically below TC = 586(10) K that is only about half of the calculated value of 1012 K. Magnetic moment 5.87 μB at 10 K is less or about in line with various theoretical predictions. However, electrical resistivity and optical studies reveal no signs of half-metallic behavior predicted theoretically. The change in the slope of the MOKE spectra below 1.5 eV suggests the main influence of a low energy inter-band transition which points to the loss of half-metallicity in agreement with resistivity and optical measurements.

中文翻译：

---

Fe2MnSn - 对预测的赫斯勒合金的实验探索

摘要 采用电弧熔化法制备多晶锭形式的Fe2MnSn化合物。与稳定四方 Heusler 化合物的理论预测相反，该材料以六方 DO19 晶体结构结晶并在 TC = 586(10) K 以下铁磁有序，这仅是 1012 K 计算值的一半左右。磁矩 5.87 μB 在10 K 与各种理论预测一致。然而，电阻率和光学研究没有显示理论上预测的半金属行为的迹象。MOKE 光谱斜率低于 1.5 eV 的变化表明低能量带间跃迁的主要影响，这表明与电阻率和光学测量一致的半金属性损失。