The fine magnetic image of a high TC SQUID probe microscope
The fine magnetic image of a high TC SQUID probe microscope
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高TC SQUID探针显微镜的精细磁图像
DOI：
10.1088/0953-2048/18/1/018
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发表时间：
2004
影响因子：
3.6
通讯作者：
H. Itozaki
中科院分区：
文献类型：
--
作者：
Tadayuki Hayashi;H. Itozaki
我们研制了一种高温超导量子干涉探针显微镜。采用高导磁率探头作为磁导，提高了空间分辨率。带有磁通导向器的SQUID头可以在室温下在空气中以高空间分辨率测量样品。通量导向器的端部和SQUID处于真空中，具有0.1mm的间隔。导磁器的尖端在空气中。导磁杆的直径和长度分别为0.6和7 mm。采用微电解抛光技术制备了高空间分辨率所需的磁导尖端。其尖端半径小于1微米。利用该系统检测了磁化墨粉颗粒的静磁场图案，获得了空间分辨率为几微米的高分辨率磁图像。
We have developed a high TC SQUID probe microscope. A high permeability probe was used as a flux guide to improve its spatial resolution. The SQUID head with the flux guide makes it possible to measure samples with high spatial resolution in air at room temperature. The end of the flux guide and the SQUID were in vacuum with a 0.1 mm separation. The tip of the flux guide was in air. The rod diameter and length of the flux guide were 0.6 and 7 mm, respectively. The sharp tip of the flux guide required for high spatial resolution was prepared by microelectropolishing. Its tip radius was less than 1 µm. The static magnetic field pattern of magnetized toner particles was detected by this system and we obtained a high-resolution magnetic image with a spatial resolution of several microns.