Publisher’s Note: Synthesis ofα′′−Fe16N2Compound Anis

Fabrication and Characterization of Fe16N2Micro‐Flake Powders and Their Extrusion‐Based 3D Printing into Permanent Magnet Form

“…the usual permanent magnet production routes, involving treatment at high temperature, [1] cannot be used. To circumvent these difficulties, several methods have been used, including shock compaction of nanoparticles, [21] strained wire method, [18] and resin bonding of individual ribbons. [20] Most recently, Liu et al [28] synthesized the prototype bonded magnet of Fe 16 N 2 by stacking low-temperature nitrided 25 μm foils.…”

“…[ 14 ] Researchers in the magnetic community revisited the Fe–N system following the rare‐earth crisis in 2010. [ 1,15 ] Theoretical [ 16 ] and experimental [ 17,18 ] works on thin films led to the first‐ever bulk‐like samples prepared by nitrogen ion implantation of free‐standing Fe foils [ 19 ] with a room temperature (RT) coercivity of 1.9 kOe and a magnetic energy product of 20 MGOe. However, the production of such foils is costly, and bulk magnet synthesis is not feasible.…”

“…However, the production of such foils is costly, and bulk magnet synthesis is not feasible. Current research on the subject focuses on the successful production of working Fe 16 N 2 [ 18,20–27 ] permanent magnets. The main drawback to the production of bulk Fe 16 N 2 permanent magnets is that the α″‐Fe 16 N 2 body centered tetragonal (BCT) phase ( Figure ) responsible for the GSM is unstable above 212 °C; [ 7 ] therefore, the usual permanent magnet production routes, involving treatment at high temperature, [ 1 ] cannot be used.…”

Synthesis of α′′-Fe16N2ribbons with a porous structure

“…[11][12][13][14][15] Recently, a 00 -Fe 16 N 2 in bulk form with relatively high coercivity (H c ) were also reported. 15,16 All these properties make a 00 -Fe 16 N 2 a promising candidate for rare-earth-free PMs. 17 The a 00 -Fe 16 N 2 phase was rst reported by Jack in 1951.…”

Heavy‐Metal‐Free, Low‐Damping, and Non‐Interface Perpendicular Fe16N2 Thin Film and Magnetoresistance Device

“…The magnitude of crystalline anisotropy increases as the N doping approaches the interstitial solubility limit (N:Fe atomic ratio of 1:8) . Furthermore, upon post‐annealing of the FeN martensite at its interstitial solubility limit (Fe 8 N), a stronger magnetic crystalline anisotropy (≈10 6 J m −3 , 10 7 erg cm −3 ) can be developed because of the formation of a chemically ordered, body‐center tetragonal Fe 16 N 2 phase, as shown in Figure S2(a), Supporting Information. A strong out‐of‐plane magnetization component is observed in even partially ordered Fe 16 N 2 thin films .…”