Structure and magnetic properties of nitrides in FeNi and FeNiCo alloy particles synthesized via co-precipitation, reduction, and nitriding
Structure and magnetic properties of nitrides in FeNi and FeNiCo alloy particles synthesized via co-precipitation, reduction, and nitriding
复制标题
共沉淀、还原和氮化合成的 FeNi 和 FeNiCo 合金颗粒中氮化物的结构和磁性能
DOI：
10.1016/j.jmmm.2021.168970
复制
发表时间：
2022
影响因子：
2.7
通讯作者：
Yanagihara Hideto
中科院分区：
文献类型：
--
作者：
Kishimoto Mikio;Kita Eiji;Yanagihara Hideto
尝试对FeNi和FeNiCo合金颗粒进行氮化处理。前驱体颗粒由Fe、Ni和Co离子共沉淀物合成，其组成为Fe/Ni: 0.5/0.5和Fe/Ni/Co: 0.5/0.45/0.05。前驱体颗粒首先在氢气中还原得到FeNi和FeNiCo合金颗粒。两种合金颗粒均具有面心立方（fcc）结构。随后用氨气和氮气的混合物进行氮化。通过对FeNi和FeNiCo合金颗粒进行氮化处理，观察到单相（Fe0.5Ni0.5）4N和（Fe0.5Ni0.45Co0.05）4N的形成。氮化处理未观察到颗粒形状的明显变化。与FeNi和FeNiCo合金颗粒相比，渗氮降低了合金的矫顽力和饱和磁化强度。Mössbauer分析表明，在FeNi氮化物颗粒中，Site I优先被Ni占据，Site II被Fe和Ni占据，且Ni/Fe: 1/2的比例。在FeNiCo氮化颗粒中观察到与FeNi相似的光谱，随着磁化强度的增加，平均超细场略有增加。
Nitriding of FeNi and FeNiCo alloy particles was attempted. Precursor particles were synthesized by co-precipitates of Fe, Ni, and Co ions with the following compositions: Fe/Ni: 0.5/0.5 and Fe/Ni/Co: 0.5/0.45/0.05. The precursor particles were first reduced in hydrogen gas to obtain FeNi and FeNiCo alloy particles. Both the alloy particles were confirmed to have face-centered cubic (fcc) structures. Nitriding was subsequently performed using a mixture of ammonia and nitrogen gases. The formation of monophase (Fe0.5Ni0.5)4N and (Fe0.5Ni0.45Co0.05)4N was observed by the nitriding of the FeNi and FeNiCo alloy particles. No significant change in particle shape was observed by nitriding. Both the coercive force and saturation magnetization decreased by nitriding compared with those of the FeNi and FeNiCo alloy particles. Mössbauer analyses showed that Site I was preferentially occupied by Ni, and Site II was occupied by Fe and Ni with a Ni/Fe: 1/2 ratio in FeNi nitride particles. A similar spectrum to that of the FeNi nitride particles was observed in the FeNiCo nitride particles with a slightly increased average hyperfine field corresponding to the increase in magnetization.
影响因子：
4.6
作者：
Goto S;Kura H;Watanabe E;Hayashi Y;Yanagihara H;Shimada Y;Mizuguchi M;Takanashi K;Kita E
通讯作者：
Kita E
影响因子：
2.7
作者：
Shima, T.;Okamura, M.;Takanashi, K.
通讯作者：
Takanashi, K.
Fe4N 晶格中锰取代铁对颗粒形成和磁性能的影响
DOI：
--
发表时间：
1990
期刊：
影响因子：
--
作者：
B. Siberchicot;S. Matar;L. Fournès;G. Demazeau;P. Hagenmuller
通讯作者：
P. Hagenmuller