Effects of ferromagnetic branch structures on coercivity of alnico permanent magnets
Effects of ferromagnetic branch structures on coercivity of alnico permanent magnets
复制标题
DOI：
10.1063/9.0000298
复制
发表时间：
2022-03
期刊：
影响因子：
1.6
通讯作者：
H. Won;Yang-Ki Hong;Minyeong Choi;G. Mankey;Jong-Kook Lee;Taegyu Lee;Taewon Lim
中科院分区：
文献类型：
--
作者：
H. Won;Yang-Ki Hong;Minyeong Choi;G. Mankey;Jong-Kook Lee;Taegyu Lee;Taewon Lim
用微磁模拟方法研究了H、U、O、YH和YY型铝镍钴结构的长度、厚度和宽度等不同的分支几何形状和尺寸对矫顽力(Hci)的影响。模拟结果表明，H型结构的相干旋转和卷曲分别需要较长和较短的分支长度，而不考虑分支的粗细和宽度，以实现高的Hci。对于U型和O型结构，建议采用短枝细粗短宽的两种转动方式。最后，两种Y型结构的相干旋转都需要长、薄、中长的树枝，而YH型的树枝需要较短的宽度，而鱼形的树枝则需要中长的树枝，无论卷曲的长度和厚度如何。此外，在所研究的五种结构中，用于相干旋转的H型或YH型结构和用于卷曲的O型结构是实现高Hci的强烈推荐结构。
The effects of various branches geometry and dimensions such as length, thickness, and width for H-, U-, O-, YH- and YU-shaped alnico structures on coercivity ( H ci) using micromagnetic simulation for coherent rotation and curling modes are investigated. The simulation results suggest that the H-shaped structure needs long and short branch length for the coherent rotation and curling, respectively, regardless of branch thickness and width to realize high H ci. Short branch length with thin thickness and short width are recommended for both rotations for the U- and O-shaped structures. Lastly, both Y-shaped structures need branch with long length, thin thickness, and mid-long width for the coherent rotation, but short width for the YH-shaped and mid-long width for the YU-shaped regardless of length and thickness for curling are desired. Furthermore, among the five studied structures, H- or YH-shaped structure for coherent rotation and O-shaped structure for curling are highly recommended for fabrication to realize a high H ci.