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采用ＣＯ２激光诱导Ｆｅ（ＣＯ）５－Ｃ２Ｈ４－ＮＨ３的气相分解反应制备了Ｆｅ、Ｆｅ－Ｎ和Ｆｅ－Ｃ－Ｎ超细微粒（微粒直径小于１００ｎｍ），用透射电子显微镜、Ｘ光衍射、Ｏ／Ｎ和Ｃ／Ｓ测试仪及振动样品磁强计等研究了微粒的结构、表面形态、表面氧的状态及磁性能等；探讨了碳对微粒的氧化特征，特别是对微粒表面氧的形态及其磁性能的影响。结果表明，微粒表面氧的状态可分为吸附态和化合态，并且二者的含量随着微粒的种类不同而变化，碳对微粒表面氧的存在状态、微粒的氧化状况及磁性能具有决定性的影响
The Fe, Fe-N and Fe-C-N ultrafine particles (particle diameter less than 100nm) were prepared by CO2 laser induced gas phase decomposition reaction of Fe (CO) 5-C2H4-NH3. Transmission electron microscopy, X-ray diffraction, / N and C / S testers and vibrating sample magnetometers were used to investigate the structure, surface morphology, surface oxygen state and magnetic properties of the particles. The oxidation characteristics of carbon to the particles, especially the morphology of oxygen on the surface of the particles And its magnetic properties. The results show that the state of oxygen on the particle surface can be divided into adsorbed state and compound state, and the content of the two changes with the type of the particle. The carbon is decisive for the existence state of oxygen on the surface of the particle, the oxidation state of the particle and the magnetic property influences