The Design and Test of an STM-MFM Microscope Combo for Use in a Φ52 mm 18/20 T Superconducting Magnet
The Design and Test of an STM-MFM Microscope Combo for Use in a Φ52 mm 18/20 T Superconducting Magnet
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用于Φ52 mm 18/20 T超导磁体的STM-MFM显微镜组合的设计和测试
DOI：
10.1109/tasc.2010.2042163
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发表时间：
2010-06-01
影响因子：
1.8
通讯作者：
Lu, Qingyou
中科院分区：
文献类型：
--
作者：
Pang, Zongqiang;Wu, Fei;Lu, Qingyou
我们提出了一种新型的扫描隧道显微镜（STM）和磁力显微镜（MFM）组合（SMC）系统，该系统用于商业牛津Phi 52毫米冷腔18/20 T超导磁体中。有三个设计亮点：（1）一个独特的真空腔，由两段管子组成：一根长的外径（OD）为19毫米的管子和一根短的外径为50毫米的封闭管子，它们通过两个半圆柱形夹具在没有直径膨胀的情况下（仍然适合Phi 52毫米的腔径）用刀口压封在一起。（2）一个紧凑的SMC探头，其中一个支柱和一个压电管扫描器（S1）平行安装，一个球粘在支柱顶部，两个球粘在扫描器顶部。这三个呈三角形排列的球支撑着一个三角形滑块。另外两个位于滑块下方的扫描器分别扫描STM和MFM探针。通过惯性步进，扫描器S1可以使滑块向支柱移动（粗调接近）或使滑块绕支柱旋转（更换扫描探针）。（3）一种在将复杂仪器集成到小腔径磁体中同时仍保持高场兼容性的设计。本文还描述了SMC的目标、进展和测试结果。
We present a novel scanning-tunneling-microscope (STM) and magnetic-force-microscope (MFM) combo (SMC) system, which is for using in a commercial Oxford Phi 52 mm cold bore 18/20 T superconducting magnet. There are three design highlights: (1) An unique vacuum chamber consisting of two lengths of pipe: a long outer diameter (OD) 19 mm pipe and a short OD 50 mm capped-off pipe that are knife-edge press sealed together by two half-cylindrical clamps without diameter expansion (still fits the Phi 52 mm bore). (2) A compact SMC head, in which a pillar and a piezoelectric tube scanner (S1) are mounted in parallel with one ball glued on the pillar top and two balls glued on the scanner top. The three triangularly arranged balls support a triangular slider piece. Additional two scanners standing underneath the slider scan the STM and MFM tips respectively. By inertial stepping, the scanner S1 can move the slider toward the pillar (coarse approach) or rotate the slider about the pillar (change scanning tips). (3) A design in integrating complicated instruments into small bore magnet while still keeping high-field compatibility. The objective of the SMC, its progress and the test results are also described in this paper.