Directional Magnetization Reversal Enables Ultrahigh Energy Density in Gradient Nanostructures
文献类型：期刊论文
| 作者 | Lou, Li; Li, Yuqing; Li, Xiaohong; Li, Hailing; Li, Wei; Hua, Yingxin; Xia, Weixing; Zhao, Zhihe; Zhang, Haitian; Yue, Ming |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 33期号:36 |
| 关键词 | FE-B ALLOYS MAGNETS MICROSTRUCTURE NUCLEATION MECHANISM |
| 英文摘要 | High-performance ferromagnetic materials are essential for energy conversion and electronic devices. However, the random and nonuniform magnetization reversal in ferromagnetics limits their performance that can be achieved. Here, through both micromagnetism simulations and experiments, a directional magnetization reversal that initiates first from large grains toward smaller ones is discovered by engineering Nd2Fe14B/alpha-Fe gradient nanostructures. Such directional magnetization reversal enables a rare combination of high magnetization and large coercivity, thus leading to a record-high energy density (26 MG Oe) for isotropic permanent magnetic materials, which is approximate to 50% higher than that of its gradient-free counterpart. The unusual magnetization reversal originates from an ordered arrangement of grain sizes in the gradient material, where the large grains have a lower reversal field than that of the smaller ones. These findings open up new opportunities for developing high-performance magnetic materials. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21713]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Li, XH 2.Zhang, XY (corresponding author), Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lou, Li,Li, Yuqing,Li, Xiaohong,et al. Directional Magnetization Reversal Enables Ultrahigh Energy Density in Gradient Nanostructures[J]. ADVANCED MATERIALS,2021,33(36). |
| APA | Lou, Li.,Li, Yuqing.,Li, Xiaohong.,Li, Hailing.,Li, Wei.,...&Zhang, Xiangyi.(2021).Directional Magnetization Reversal Enables Ultrahigh Energy Density in Gradient Nanostructures.ADVANCED MATERIALS,33(36). |
| MLA | Lou, Li,et al."Directional Magnetization Reversal Enables Ultrahigh Energy Density in Gradient Nanostructures".ADVANCED MATERIALS 33.36(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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