透射电子显微镜原位磁场双倾样品杆的研制

透射电子显微镜原位磁场双倾样品杆的研制

杨新安， 姚 湲，田焕芳， 段晓峰

（中国科学院物理研究所北京凝聚态物理国家实验室，北京 100190）

 摘 要：本文简述了透射电镜磁场双倾样品杆的设计方案，展示了Philips/FEI透射电镜磁场双倾样品杆的研制成果。利用该样品杆可以产生100 Oe的连续磁场，也可以产生140 Oe以上的瞬间磁场。通过“U”型磁组件和样品杯的巧妙设计，尽可能的减小了电子束在横向磁场中的偏移量。

关键词：透射电子显微镜；样品杆；原位技术；磁性

中图分类号：O766⁺.1；O737；O441.5      文献标识码：A

Fabrication of the in situ double-tilt TEM holder with magnetic field

 YANG Xin-an*, YAO Yuan*, TIAN Hua-fang, DUAN Xiao-feng

 (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China)

 Abstract:The design of double-tilt TEM holder with magnetic field is described in this paper. A special U shape magnetic coil is fixed on the tip of the hold and the strength of the magnetic field can be adjusted by the external current. The sample cup is truncated to ensure that the sample faces the magnetic field. The U shape coil can applies equal but direction-counter Lorentz force on the electron beam to limit the beam shift and avoid the image distortion. The in-plane stable magnetic field can be kept as 100 Oe and instantaneous strength can reach 140 Oe.

Keywords:transmission electron microscope；sample holder；in situ；magnetism

[1] Inoue1 M, Tomita1 T, Naruse1 M, et al.  Development of a magnetizing stage for in situ observations with electron holography and Lorentz microscopy[J].  J Electron Microsocpy, 2005, 54(6) :509-513.

[2] Uhlig T, Heumann M, Zweck J. Development of a specimen holder for in situ generation of pure in-plane magnetic fields in a transmission electron microscope[J].  Ultramicroscopy,  2003,  94:193-196.

[3] 刘海华, 车仁超, 王志峰, 等.  利用自制可加磁场样品台对链状位移型磁畴壁的原位洛伦兹电子显微术研究[J]. 电子显微学报, 2011, 30(2):97-101.

[4] Yi G, Nicholson W A P, Lim C K, et al.  A new design of specimen stage for in situ magnetizing experiments in the transmission electron microscope[J].  Ultramicroscopy, 2004,  99: 65-72.

[5]姚湲, 杨新安, 田焕芳, 等.  透射电子显微镜原位双倾样品杆的研制[J]. 电子显微学报, 2013, 32(3): 271-275.