Structure and Magnetic Properties of Mechanically Grinded .GAMMA.'-Fe4N Iron Nitride.

The carbodiimide-based non-oxide sol-gel process is a novel route to non-oxide nitride and carbide ceramics. This process has been applied to fabricate ternary or binary silicon based nitride and carbide ceramics. Based on this non-oxide sol-gel process, iron carbide and nitride have been fabricated by reaction of iron trichloride with bis(trimethylsilyl)carbodiimide to form FeCN gel followed by pyrolysis in argon flow at different temperatures. The iron carbide material obtained at 700 °C exhibits hard ferromagnetic properties whereas α-iron along with iron nitride formed at 1300 °C shows soft ferromagnetic properties. Therefore, iron carbide and nitride ceramics with controlled magnetic properties can be obtained along this novel non-oxygen sol-gel process by controlled pyrolysis. The pyrolysis behavior was investigated based on thermal gravimetric analysis coupled with differential scanning calorimetry. The phase structures of the iron carbide and nitride are identified by X-ray diffraction and the magnetic properties of the materials are measured by magnetometer.

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Preparation and magnetic properties of ultrafine iron nitride powders

Metal Powder Report ◽

10.1016/0026-0657(92)91493-4 ◽

1992 ◽

Vol 47 (6) ◽

pp. 56

Keyword(s):

Magnetic Properties ◽

Iron Nitride

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Structure and magnetic properties of RF reactively sputtered Iron nitride thin films

IEEE Transactions on Magnetics ◽

10.1109/tmag.1987.1065385 ◽

1987 ◽

Vol 23 (5) ◽

pp. 3636-3638 ◽

Cited By ~ 33

Author(s):

C. Chang ◽

J. Sivertsen ◽

J. Judy

Keyword(s):

Thin Films ◽

Magnetic Properties ◽

Iron Nitride

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Microstructure and magnetic properties of iron nitride thin films

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2013.08.064 ◽

2014 ◽

Vol 582 ◽

pp. 398-402 ◽

Cited By ~ 17

Author(s):

Xiaoyu Li ◽

Xiaojun Sun ◽

Jianbo Wang ◽

Qingfang Liu

Keyword(s):

Thin Films ◽

Magnetic Properties ◽

Iron Nitride ◽

Microstructure And Magnetic Properties

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The oxidation behavior and magnetic properties of iron carbonitride ultrafine particles

Journal of Materials Research ◽

10.1557/jmr.1996.0339 ◽

1996 ◽

Vol 11 (11) ◽

pp. 2689-2692

Author(s):

X. Q. Zhao ◽

Y. Liang ◽

Z. Q. Hu ◽

B. X. Liu

Keyword(s):

Magnetic Properties ◽

Saturation Magnetization ◽

Ultrafine Particles ◽

Carbon Coating ◽

Oxidation Behavior ◽

Structural Characteristics ◽

Iron Nitride ◽

Thin Carbon ◽

Surface Morphologies

Iron nitride and iron carbonitride (ICN) ultrafine particles (20–80 nm in size) have been synthesized by laser-induced pyrolysis of the Fe(CO)5–NH3–C2H4 system. The oxidation behavior, surface morphologies, and structural characteristics as well as magnetic properties of these particles are reported and discussed. It is found that the presence of very thin carbon coating (1–2 nm) on the ICN particles plays an important role in preventing the oxidation of the particles. Accordingly, the ICN ultrafine particles exhibit higher saturation magnetization (142 emu/g) than the iron nitride ones (124 emu/g).

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