The preparation and ferromagnetism of single crystal epsilon-Fe3N(111) film on SrTiO3(100) substrate

摘要

We report the growth of single crystal hexagonal epsilon-Fe3N(111) film on SrTiO3(100) substrate by ablating high-purity iron target in activated nitrogen. The measurements of reflection high-energy diffraction, X-ray diffraction, atomic force microscopy and vibrating sample magnetometer reveal that the epsilon-Fe3N(111) films have well crystallization, smooth surface, and strong ferromagnetism. The root mean square roughness of the epsilon-Fe3N film surface is 0.25 nm. The saturation magnetization values are similar to 900 and similar to 1050 emuicm(3) at 300 and 10 K, respectively. The in-plane and out-of-plane coercivity forces are 550 and 675 Oe, respectively. Meanwhile, the film has obvious magnetic anisotropy. (C) 2016 Elsevier Ltd. All rights reserved.