一种紧凑型高场磁力显微镜。

A compact high field magnetic force microscope.

作者信息

Zhou Haibiao, Wang Ze, Hou Yubin, Lu Qingyou

机构信息

High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230031, People׳s Republic of China; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People׳s Republic of China.

High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei, Anhui 230031, People׳s Republic of China.

出版信息

Ultramicroscopy. 2014 Dec;147:133-6. doi: 10.1016/j.ultramic.2014.07.011. Epub 2014 Aug 9.

DOI:10.1016/j.ultramic.2014.07.011

PMID:25189114

Abstract

We present the design and performance of a simple and compact magnetic force microscope (MFM), whose tip-sample coarse approach is implemented by the piezoelectric tube scanner (PTS) itself. In brief, a square rod shaft is axially spring-clamped on the inner wall of a metal tube which is glued inside the free end of the PTS. The shaft can thus be driven by the PTS to realize image scan and inertial stepping coarse approach. To enhance the inertial force, each of the four outer electrodes of the PTS is driven by an independent port of the controller. The MFM scan head is so compact that it can easily fit into the 52mm low temperature bore of a 20T superconducting magnet. The performance of the MFM is demonstrated by imaging a manganite thin film at low temperature and in magnetic fields up to 15T.

摘要

我们展示了一种简单紧凑的磁力显微镜（MFM）的设计和性能，其针尖 - 样品粗调方法由压电管扫描仪（PTS）自身实现。简而言之，一根方杆轴轴向弹簧夹紧在金属管的内壁上，该金属管粘贴在PTS的自由端内部。因此，轴可以由PTS驱动以实现图像扫描和惯性步进粗调。为了增强惯性力，PTS的四个外部电极中的每一个都由控制器的一个独立端口驱动。MFM扫描头非常紧凑，能够轻松装入20T超导磁体的52mm低温孔中。通过在低温和高达15T的磁场中对锰氧化物薄膜进行成像，展示了MFM的性能。