Kerr effect microscope combined with a pulse magnet to observe high-entropy alloys fabricated using combinatorial technology

Kerr effect microscope combined with a pulse magnet to observe high-entropy alloys fabricated using combinatorial technology
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克尔效应显微镜与脉冲磁体相结合,观察使用组合技术制造的高熵合金

DOI:
10.1080/27660400.2021.1983883
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发表时间:
2021
期刊:
Science and Technology of Advanced Materials: Methods
影响因子:
--
通讯作者:
Nagata Takahiro
Nagata Takahiro
中科院分区:
--
文献类型:
--
作者:
Yagyu Shinjiro;Mitsui Tadashi;Chikyow Toyohiro;Nagata Takahiro

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我们开发了一种模块型二维(2D)极性克尔效应显微镜,使用脉冲宽度为13 ms,最大磁场为7 kOe的脉冲磁体,以加速新型软磁材料的开发。我们还开发了一种算法和方法,以提取静态图像从测量电影文件时,脉冲磁场施加。为了评估该仪器的性能,我们测量了基于FeCoMn样品的高熵合金,这些样品是使用材料信息学筛选和选择的。通过在高熵FeCoMn合金上沉积Pt、Zn、Cu和Ru得到的样品在外加磁场中表现出与克尔旋转角成正比的亮度分布。开发的仪器能够对成分分散的薄膜进行高速磁场映射,预计将加速新材料的开发。
We developed a module-type two-dimensional (2D) polar Kerr effect microscope using a pulse magnet with a pulse width of 13 ms and a maximum magnetic field of 7 kOe to accelerate the development of new soft magnetic materials. We also developed an algorithm and method to extract still images from a measurement movie file when the pulse magnetic field is applied. To evaluate the performance of this instrument, we measured high-entropy alloys based on FeCoMn samples, which were screened and selected using material informatics. Samples obtained through depositing Pt, Zn, Cu, and Ru on high-entropy FeCoMn alloys exhibited a brightness distribution proportional to the Kerr rotation angle in the applied magnetic field. The developed instrument enabled the high-speed magnetic field mapping of composition-spread thin films and is expected to accelerate new material development.
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