Large and sensitive magnetostriction in ferromagnetic composites with nanodispersive precipitates
文献类型：期刊论文
| 作者 | Gou, Junming; Ma, Tianyu; Liu, Xiaolian; Zhang, Changsheng; Sun, Liangwei; Sun, Guangai; Xia, Weixing; Ren, Xiaobing |
| 刊名 | NPG ASIA MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:1 |
| 关键词 | FE-GA ALLOYS STRUCTURALLY HETEROGENEOUS MODEL SIMILAR MAGNETIC-ALLOYS EXTRINSIC MAGNETOSTRICTION FIELD MAGNETOELASTICITY ELASTICITY MECHANISM FE81GA19 ORDER |
| 英文摘要 | Large and sensitive magnetostriction (large strain induced by small magnetic fields) is highly desired for applications of magnetostrictive materials. However, it is difficult to simultaneously improve magnetostriction and reduce the switching field because magnetostriction and the switching field are both proportional to the magnetocrystalline anisotropy. To solve this fundamental challenge, we report that introducing tetragonal nanoprecipitates into a cubic matrix can facilitate large and sensitive magnetostriction even in random polycrystals. As exhibited in a proof-of-principle reference, Fe-Ga alloys, the figure of merit-defined by the saturation magnetostriction over the magnetocrystalline anisotropy constant-can be enhanced by over 5-fold through optimum aging of the solution-treated precursor. On the one hand, the aging-induced nanodispersive face-centered tetragonal (FCT) precipitates create local tetragonal distortion of the body-centered cubic (BCC) matrix, substantially enhancing the saturation magnetostriction to be comparable to that of single crystal materials. On the other hand, these precipitates randomly couple with the matrix at the nanoscale, resulting in the collapse of net magnetocrystalline anisotropy. Our findings not only provide a simple and feasible approach to enhance the magnetostriction performance of random polycrystalline ferromagnets but also provide important insights toward understanding the mechanism of heterogeneous magnetostriction. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22283]  |
| 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.Ma, TY 2.Ren, XB (corresponding author), Xi An Jiao Tong Univ, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China. 3.Ren, XB (corresponding author), Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Gou, Junming,Ma, Tianyu,Liu, Xiaolian,et al. Large and sensitive magnetostriction in ferromagnetic composites with nanodispersive precipitates[J]. NPG ASIA MATERIALS,2021,13(1). |
| APA | Gou, Junming.,Ma, Tianyu.,Liu, Xiaolian.,Zhang, Changsheng.,Sun, Liangwei.,...&Ren, Xiaobing.(2021).Large and sensitive magnetostriction in ferromagnetic composites with nanodispersive precipitates.NPG ASIA MATERIALS,13(1). |
| MLA | Gou, Junming,et al."Large and sensitive magnetostriction in ferromagnetic composites with nanodispersive precipitates".NPG ASIA MATERIALS 13.1(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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