矫顽力
材料科学
磁化
退火(玻璃)
凝聚态物理
磁致伸缩
Stoner–Wohlfarth模型
核磁共振
结晶
磁各向异性
磁场
复合材料
物理
热力学
量子力学
作者
Zhao Keli,Peng Pang,Jie Luo,Binghe Ma,Wei Gao,Jinjun Deng
标识
DOI:10.1109/tmag.2023.3237937
摘要
Terfenol-D (Tb0.3Dy0.7Fe2) film with low coercivity and high magnetization in weak magnetic fields is essential for its application as a weak magnetic sensor. In this article, an annealing method is proposed to optimize the coercivity and magnetization of the deposited Terfenol-D film. The magnetization could be improved by releasing compressive stress and increasing saturation magnetization. The coercivity decreases and then increases sharply due to partial crystallization with the annealing temperature increasing. The low coercivity of 12.6 Oe and high magnetization at 100 Oe of 0.29 emu/g are obtained with the annealing temperature at 525 °C. Further increment in annealing temperature does not contribute to coercivity and magnetization. The annealed film could promote the application of Terfenol-D in weak magnetic sensors.
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