发明授权
US06936816B2 High contrast inspection and review of magnetic media and heads 有权
磁性介质和磁头的高对比度检查和检查

High contrast inspection and review of magnetic media and heads
摘要:
One embodiment disclosed relates to a method for inspecting or reviewing a magnetized specimen using an automated inspection apparatus. The method includes generating a beam of incident electrons using an electron source, biasing the specimen with respect to the electron source such that the incident electrons decelerate as a surface of the specimen is approached, and illuminating a portion of the specimen at a tilt with the beam of incident electrons. The specimen is moved under the incident beam of electrons using a movable stage of the inspection apparatus. Scattered electrons are detected to form image data of the specimen showing distinct contrast between regions of different magnetization. The movement of the specimen under the beam of incident electrons may be continuous, and data for multiple image pixels may be acquired in parallel using a time delay integrating detector.
信息查询
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