Synthesis and characteristics of Fe4N powders and thin films

Electromagnetic and absorption properties of nano-sized and micro-sized Fe 4 N particles

“…The grain size estimated by Scherrer's formula is 30-40 nm and 40-50 nm for the nano-sized and micro-sized Fe 4 N particles, respectively. Fe 4 N particles is 196 emu/g, which is a little higher than the value (188 ± 2 emu/g) reported previously [16]. The M s value of nano-sized Fe 4 N particles is 221 emu/g, which is higher than not only that of micro-sized Fe 4 N particles in the present study, but also the reported sheet-form Fe 4 N (179 emu/g) [14] and pure iron (218 emu/g) [15].…”

Investigation on the structure and magnetic properties at low temperature for nanocrystalline γ′-Fe4N thin films

“…Using molecular beam epitaxy (MBE) technique, Costa-Kramer et al [24] have obtained an epitaxy ␥ -Fe 4 N on MgO (0 0 1) substrate. Yamaguchi et al [25] have synthesized a single ␥ -Fe 4 N phase by nitrifying iron thin film in ammonia-hydrogen gas. In our previous work [26], the single-phase ␥ -Fe 4 N magnetic films have also been acquired by magnetron sputtering.…”

Structural and magnetic properties of nanocrystalline Fe–N thin films and their thermal stability

“…Since the first report on the possible 'giant-moment' ␣ -Fe 16 N 2 phase by Kim and Takahashi, ferromagnetic iron nitride compounds, such as ␣-Fe (N), -Fe 3 N (hcp), ␥ -Fe 4 N (fcc), and ␣ -Fe 16 N 2 (bct), have been intensively investigated [9][10][11][12][13][14][15][16][17]. Recently, synthesis and characterization of nanocrystalline iron nitride have been attracting widespread attention because of their unique magnetic properties and the improved performances determined by their particle sizes, surface structures and inter-particle interaction [18][19][20][21][22][23][24][25].…”