Abstract
A novel magnetic microstigmator was developed for the astigmatism correction in the electron beam microcolumn system. The magnetic microstigmator consists of eight magnetic poles coupled with micromachined solenoid-type coils that are divided into four pairs. The proposed magnetic microstigmator was fabricated using microelectromechamical system technology and was assembled in an electron beam microcolumn for testing. The preliminary experimental results show that the developed magnetic microstigmator can effectively correct the astigmatism of the electron beam in the electron beam microcolumn with a driving current of 300mA and low power.
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More From: Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena
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