title: Microwave absorption of gamma'-Fe2.6 Ni1.4N nanoparticles derived from nitriding counterpart precursor.
abstract: Gamma-Fe2.6Ni1.4 nanoparticles were prepared by the arc-discharge method as the precursor and its nitride counterpart of gamma'-Fe2.6Ni14N nanoparticles was synthesized directly through a thermal ammonolysis reaction at the temperature of 673 K for two hours. The resultant product was identified as a homogeneous ternary nitride with nearly spherical shape and average size of about 60.0 nm. The electromagnetic characteristics of gamma'-Fe2.6Ni1.4N derivant and gamma-Fe2.6Ni1.4 precursor have been studied in the frequency range of 2-18 GHz. Compared with the precursor, gamma'-Fe2.6Ni1.4N nanoparticles exhibits an enhanced electromagnetic absorption property resulted from the increased dielectric loss by nitriding process. The optimal reflection loss (RL) of gamma'-Fe2.6Ni1.4N nanoparticles/paraffin composite can reach -39.9 dB at 5.2 GHz in a thickness of 2.29 mm, and the frequency band corresponding RL < -10 dB is over 2.6-18 GHz in the thickness range of 0.78-4.20 mm.
authors: School of Material Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116024, People's Republic of China.
authors: H
authors: H
authors: Huang
authors: F
authors: F
authors: Wang
authors: B
authors: B
authors: Lv
authors: F H
authors: FH
authors: Xue
authors: D Y
authors: DY
authors: Guo
authors: W J
authors: WJ
authors: Park
authors: W J
authors: WJ
authors: Lee
authors: X L
authors: XL
authors: Dong