Li Xiao-Qi, Li Zhi, Shi Tong-Tong
School of Science, University of Science and Technology Liaoning, Anshan 114051, PR China.
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, PR China.
J Nanosci Nanotechnol. 2021 Mar 1;21(3):1636-1640. doi: 10.1166/jnn.2021.18986.
Fe₄N nanopowders were prepared using specially-made high-pressure gas-solid reaction equipment, and their composition, morphology, and magnetic properties were analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). An average particle size of 35 nm was obtained at 0.4 MPa, an ammonia-to-hydrogen ratio of 3:1, 623 K, in an ammonia solution for 2 h. The hysteresis loop displayed a thin and narrow shape at 673 K during VSM tests. The saturation magnetization () reached 169.80 emu/g.
使用特制的高压气固反应设备制备了Fe₄N纳米粉末，并通过X射线衍射（XRD）、透射电子显微镜（TEM）和振动样品磁强计（VSM）对其组成、形态和磁性进行了分析。在0.4 MPa、氨氢比为3:1、623 K的氨溶液中反应2小时，获得了平均粒径为35 nm的产物。在VSM测试中，673 K时的磁滞回线呈现出细而窄的形状。饱和磁化强度（）达到169.80 emu/g。
