Evaluation of flux guide performance in a SQUID microscope
Evaluation of flux guide performance in a SQUID microscope
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SQUID 显微镜中通量导向器性能的评估
DOI：
10.1088/0953-2048/16/12/045
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发表时间：
2003
影响因子：
3.6
通讯作者：
R. Koetitz
中科院分区：
文献类型：
--
作者：
T. Kondo;H. Itozaki;R. Koetitz
我们研制了一种高温超导扫描SQUID显微镜。为了提高其空间分辨率的坡莫合金针被用作磁通导向器。磁通导向器使得在室温下测量空气中的样品成为可能。线宽为100 µm量级的印刷字符的磁场图案成像良好。我们已经研究了磁通导向器的性能实验和数值模拟。使用三维有限元方法计算了曲折线结构的预期线扫描图像，并发现与实验数据相当吻合。
We have developed a high-TC scanning SQUID microscope. In order to improve its spatial resolution a permalloy needle was used as a flux guide. The flux guide makes it possible to measure samples in air at room temperature. The magnetic field pattern of printed characters with linewidth of the order 100 µm was imaged well. We have investigated the performance of the flux guide both experimentally and numerically. The expected line scan image of a meander line structure was calculated using the three-dimensional finite element method and was found to agree reasonably well with the experimental data.