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    • 53. 发明专利
    • Method and apparatus for inspecting thermally assisted magnetic head
    • 用于检查热辅助磁头的方法和装置
    • JP2014071927A
    • 2014-04-21
    • JP2012216338
    • 2012-09-28
    • Hitachi High-Technologies Corp株式会社日立ハイテクノロジーズ
    • TOKUTOMI TERUAKISAITO NAOYAKITANO KEISHOCHANG KE-BONGWATANABE MASAHIROHIROSE TAKESHI
    • G11B5/455G01Q60/02G01Q60/18G01Q60/54G01Q80/00
    • G11B20/1816B82Y35/00G01Q60/08G11B5/455G11B2005/0021
    • PROBLEM TO BE SOLVED: To effectively and highly accurately measure a magnetic field generated by a thermally assisted magnetic head and a near-field light generation area.SOLUTION: An apparatus for inspecting a thermally assisted magnetic head comprises: scanning type probe microscope means provided with a cantilever whose tip has a probe having its surface formed with a magnetic film; a probe unit that feeds an AC current to a terminal formed on a thermally assisted magnetic head element and makes a drive current or a drive voltage apply to a near-field light emitting unit; scattered light detection means for detecting scattered light generated from the probe in a generation area of near-field light by scanning with the probe while applying a drive current or a drive voltage to the near-field light emitting unit; image taking means for taking images of the thermally assisted magnetic head element including the near-field light emitting unit; and signal processing means for performing detection of the thermally assisted magnetic head element, by the use of an output signal output from scanning type probe microscope means by scanning with the probe while feeding a terminal with an AC current and an output signal from the scattered light detection means.
    • 要解决的问题:有效和高精度地测量由热辅助磁头和近场光产生区域产生的磁场。解决方案:用于检查热辅助磁头的装置包括:扫描型探针显微镜装置, 其尖端具有其表面形成有磁性膜的探针的悬臂; 探针单元,其将AC电流馈送到形成在热辅助磁头元件上的端子,并将驱动电流或驱动电压施加到近场发光单元; 散射光检测装置,用于在向近场发光单元施加驱动电流或驱动电压的同时用探头扫描在近场光的产生区域中检测从探头产生的散射光; 摄像装置,用于拍摄包括近场光发射单元的热辅助磁头元件的图像; 以及信号处理装置,用于通过使用从扫描型探针显微镜装置输出的输出信号,通过用探针向扫描器馈送交流电流的端子和来自散射光的输出信号,来执行热辅助磁头元件的检测 检测手段。