The advantages of the magnetic structure in ferromagnetic-film-coated carbon nanotube probes

Manago T.; Asada H.; Uzumaki T.; Takano F.; Akinaga H.; Kuramochi H.

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The advantages of the magnetic structure in ferromagnetic-film-coated carbon nanotube probes

机译：磁性结构在铁磁膜涂层碳纳米管探针中的优势

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The magnetic structures of ferromagnetic-film-coated carbon nanotube (CNT) probes and conventional pyramidal probes for a magnetic force microscope (MFM) were simulated using three-dimensional micromagnetic simulation. The CNT-MFM probes with a total probe diameter less than 60nm are almost uniformly magnetized along the longitudinal direction of the CNT, which is the ideal magnetic structure for MFM observations. On the other hand, the pyramidal probes had a vortex structure around the point tip, which suggests that they require a greater thickness of the ferromagnetic film because only part of the magnetic moment participates in the detection of the z-component of the stray field from samples. The advantages of the CNT-MFM probe are uniform magnetization along the longitudinal direction and magnetic imaging ability using a smaller coating thickness.

机译：使用三维微磁模拟法模拟了涂有铁磁膜的碳纳米管（CNT）探针和用于磁力显微镜（MFM）的常规金字塔形探针的磁性结构。总探针直径小于60nm的CNT-MFM探针沿CNT的纵向几乎均匀地磁化，这是进行MFM观察的理想磁性结构。另一方面，金字塔形探针在尖端周围具有涡旋结构，这表明它们需要更大厚度的铁磁膜，因为只有一部分磁矩参与了对来自杂散磁场的z分量的检测。样品。 CNT-MFM探针的优点是沿纵向方向的均匀磁化强度和使用较小涂层厚度的磁成像能力。

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《Nanotechnology》 |2012年第3期|共6页
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Manago T.; Asada H.; Uzumaki T.; Takano F.; Akinaga H.; Kuramochi H.;
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The advantages of the magnetic structure in ferromagnetic-film-coated carbon nanotube probes

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