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同步还原氮化法制备γ′-Fe₄N化合物

Preparing γ′-Fe₄N compound by a combined method of reduction and nitriding

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【Author】 WU Xiaoling~1, JIANG Hongying~( 2), LIU Wei~( 2), ZHONG Wei~(2 ),DU Youwei~2(1.Physics Department of Nanjing Medical University, Nanjing 210029,China;2.National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093,China)

【机构】南京医科大学物理教研室；南京大学物理系固体微结构国家重点实验室；南京大学物理系固体微结构国家重点实验室南京210029；南京210093；南京210093；

【摘要】利用Fe3O4 作为前驱体,通过同步还原氮化的方法制备了单相γ′Fe4N化合物.研究了在氮化过程中氨氢比和氮化温度对物相生成的影响,以及氮化温度对颗粒粒度的影响;并对γ′Fe4N结构和磁性进行了系统的研究.更多还原

【Abstract】 Singlephase γ′Fe₄N nanoparticles have been synthesizedby a combined method of reduction and nitriding using Fe₃O₄nanoparticles as precursor. The effects of different gas and quenching temperatures on the phase and grain size of reaction products have been studied. Their magnetic properties have been investigated systematically.更多还原