Reactively sputtered Ni, Ni(N) and Ni3N films: Structural, electrical and magnetic properties

Electronic structure and magnetic ordering of NiN and Ni 2 N from first principles

“…3,6,9-18 Nevertheless, Ni 3 N was also reported to thermally decompose at temperatures above 600-680 K. [7][8][9]19 Juza and Sachsze also mentioned the metallic bonding in this nickel nitride, which contrasts the ionic metal-nitrogen bonding reported for Cu 3 N. 7 Only few studies focused on the magnetic properties of Ni 3 N. While Gajbhiye et al found stable ferromagnetic order below T C = 634 K, Vempaire et al as well as Leineweber et al did not observe any indications for a magnetic instability. 3, 10,12,14,15,17 This finding was also supported by first principles calculations, which at-tributed the suppression of magnetic order to delocalization of the electronic states due to the strong Ni 3d-N 2p hybridization. 12,14,15,20,21 In contrast to Ni 3 N, Ni 4 N and Ni 8 N were much less studied since they appeared mainly as intermediate phases during the decomposition of the former compound.…”

“…They found an orderdisorder transition at 550 K in Mn 3 N 1. 17 , partial disorder with increasing temperature in Fe 3 N 1+x , and complete order in Ni 3 N. [8][9][10] The overall trend of this behavior was explained by the decrease of lattice parameters along the series, which causes decrease in N-N distances. The resulting increase in repulsive interactions between the interstitial atoms would then cause their ordering.…”

Nonmagnetic thin layers of Ni3N

“…Compared to the literature, as total number of peaks 3, 4, 6, 7, 10, and 11, are observed in Ni 3 N for Refs. 10,25,and 20,Refs. 11 and 14,and Refs.…”

“…19,20 For all mentioned references above, the progressive crossover between the different phases in Ni-N as a function of nitrogen content was not controlled although the N 2 proportion dependence was addressed. 9,11,14,20 Unfortunately, most papers report a mixture of nitrided phases, [11][12][13][14][15] which prevents an accurate study of the physical properties. For instance, the magnetic properties of Ni 3 N seem to present a ferromagnetic behavior, with a weak saturation magnetization: 6.7 emu/ cm 3 ͑Ref.…”

Deposition of magnesium nitride thin films on stainless steel-304 substrates by using a plasma focus device

“…Different properties of grown thin films depend directly on the microstructure of the thin film, which can vary for different deposition methods and deposition parameters, namely, deposition rate, substrate temperature, ratio of ions to neutral atoms and the amount of contamination. Therefore, thin films can be grown with different nano-structures, crystallographic orientations and chemical compositions [8][9][10][11].…”