Study of the anisotropic Sm2Fe17N3 powders with high performance
Source abstract
Abstract
The strip casting technique was first used in this work to prepare the Sm2Fe17 parent alloys. Next, the Sm2Fe17N3 powders were synthesized using a gas–solid reaction of Sm2Fe17 powders with N2. Then, the anisotropic Sm2Fe17N3 powders with high performance were prepared by a surfactant-assisted grinding method in gasoline solvent. It was found that the coercivity (iHc) of ground powders increases with decreasing the average particle size (Dm), while the saturation magnetization (Ms) decreases. The maximum value of iHc of 17.5 kOe was obtained at the Dm = 1.3 µm. The ground powders with Dm of 3.1 µm show a remanence ratio (Mr/Ms) over 95% and a maximum energy product [(BH)max] of 35 MGOe. The Sm2Fe17N3 powder exhibited a very high iHc of 36.1 kOe at 10 K. Above 300 K, Sm2Fe17N3 powders mixed with epoxy resin showed a low remanence temperature coefficient of α(RT-100°C) = −0.077% °C−1.
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Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic and transport properties of perovskites and related materials · Hydrogen Storage and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University 1 , Beijing 100871, China
Beijing Key Laboratory for Magnetoelectric Materials and Devices 2 , Beijing 1000871, China
Ningxia Magvalley Novel Materials Co., Ltd. 3 , Rare Earth Novel Materials Sub-Park, Dingdong Energy and Chemical Industry Base, Ningxia 750000, China
The Southwest Applied Magnetism Research Institute 4 , Mianyang 621000, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China
References (20)
Show source-provided references
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