Jeon Kwang-Won, Moon Ki Woong, Kang Min, Kang Min Kyu, Lee Gyu-Tae, Kim Jongryoul
J Nanosci Nanotechnol. 2015 Nov;15(11):8693-6. doi: 10.1166/jnn.2015.11499.
Increasing the remanence value of bulk permanent magnets is a critical issue to increase their maximum energy product ((BH)(max)) value. Currently, the enhancement of magnetic alignment is known to come close to the engineering limit. In this study, we investigated the effect of a magnetic layered structure on the remanence value using strontium ferrite and AlNiCo. Through the thickness control of AlNiCo layers, the magnetic properties of the layered composite magnets were evaluated. As a result, the remanence value increased from 4.13 kG to 4.32 kG and the maximum energy product value increased from 3.90 MGOe to 4.23 MGOe with the 5 wt% addition of AlNiCo.
提高块状永磁体的剩磁值是提高其最大能量积（(BH)(max)）值的关键问题。目前，已知磁取向的增强已接近工程极限。在本研究中，我们使用锶铁氧体和铝镍钴研究了磁性层状结构对剩磁值的影响。通过控制铝镍钴层的厚度，对层状复合磁体的磁性能进行了评估。结果，添加5 wt%的铝镍钴后，剩磁值从4.13 kG增加到4.32 kG，最大能量积值从3.90 MGOe增加到4.23 MGOe。
