Structure and magnetic properties of Ni-N nanofilms

Herein, the synthesis, structure, thermal stability, and magnetic properties of Ni 4 N thin films are studied. Ni 4 N is difficult to synthesize in the correct chemical order and stoichiometry due to unfavorable thermodynamics. During the synthesis of Ni-N thin films, it is found that the substrate temperature (T s) is a critical parameter affecting the growth of a Ni 4 N phase. The Ni 4 N phase transforms into an amalgamation of [NiþNi 3 N] phases even if the T s rises just above 300 K. These results elucidate a correlation between atomic diffusion and T s. N self-diffusion measurements carried out using secondary-ion mass spectroscopy indicate that substantial N self-diffusion is occurring at low T s. A comparison of N self-diffusion coefficients in Fe-N, CoN , and Ni-N indicates that N self-diffusion in Ni-N lies between that of Fe-N and CoN and exhibits a greater correlation with the enthalpy of formation. A transformation from the cubic-to-tetragonal deformation in the Ni 4 N crystal lattice as a function of increasing N concentration is evident from the X-ray diffraction and X-ray absorption near-edge spectroscopy measurements. Magnetization measurements confirm a nonferromagnetic state of Ni 4 N at 300 K, which transforms into a ferromagnetic state at 15 K.

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Structure, Thermal Stability, and Magnetism of Ni₄N Thin Films

Pandey

Gupta

Stahn

2020

Physica Rapid Research Ltrs

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Electrochemical characteristics of NixN thin films deposited by DC and HiPIMS reactive magnetron sputtering

Kéraudy¹,

Athouël²,

Hamon³

et al. 2019

Thin Solid Films

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Ni spin coupling and Ni_xN (x = 1, 4) (111) growth at low and room temperatures and different strains using the CrN (111) surface as initial substrate

Moreno H.,

Cocoletzi,

Calleja A.

2024

CrystEngComm

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Structure and magnetic properties of Ni-N nanofilms

Cited by 3 publications

References 6 publications

Structure, Thermal Stability, and Magnetism of Ni₄N Thin Films

Structure, Thermal Stability, and Magnetism of Ni₄N Thin Films

Electrochemical characteristics of NixN thin films deposited by DC and HiPIMS reactive magnetron sputtering

Ni spin coupling and Ni_xN (x = 1, 4) (111) growth at low and room temperatures and different strains using the CrN (111) surface as initial substrate

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Structure and magnetic properties of Ni-N nanofilms

Cited by 3 publications

References 6 publications

Structure, Thermal Stability, and Magnetism of Ni4N Thin Films

Structure, Thermal Stability, and Magnetism of Ni4N Thin Films

Electrochemical characteristics of NixN thin films deposited by DC and HiPIMS reactive magnetron sputtering

Ni spin coupling and NixN (x = 1, 4) (111) growth at low and room temperatures and different strains using the CrN (111) surface as initial substrate

Contact Info

Product

Resources

About

Structure, Thermal Stability, and Magnetism of Ni₄N Thin Films

Structure, Thermal Stability, and Magnetism of Ni₄N Thin Films

Ni spin coupling and Ni_xN (x = 1, 4) (111) growth at low and room temperatures and different strains using the CrN (111) surface as initial substrate