In this letter, the concept of a high-resolution magnetic field energy imaging technique is demonstrated by a high susceptibility superparamagnetic Co-GdOx magnetic force microscopy (MFM) tip for a perpendicular magnetic recording head with alternating magnetic force microscopy (A-MFM). The distribution of the magnetic energy gradient from the perpendicular recording head is imaged by the Co-GdOx superparamagnetic tip and compared with magnetic field imaging by the FePt-MgO hard magnetic tip. The Fourier analysis of the A-MFM amplitude images revealed enhancement in a spatial resolution of 13 nm by the Co-GdOx superparamagnetic tip as compared to 17 nm by the state-of-the-art FePt-MgO hard magnetic tip. The magnetic dipolar nature and short range force character of magnetic energy imaging by the Co-GdOx superparamagnetic tip showed high performance, confirmed by the tip transfer function analysis as compared to the monopole type FePt-MgO hard magnetic tip. The proposed technique opens an opportunity for t...

中文翻译：

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具有 Co-GdOx 超顺磁尖端的 A-MFM 对磁记录头的高分辨率磁场能量成像

在这封信中，高分辨率磁场能量成像技术的概念通过用于具有交变磁力显微镜 (A-MFM) 的垂直磁记录头的高磁化率超顺磁性 Co-GdOx 磁力显微镜 (MFM) 尖端来证明。来自垂直记录头的磁能梯度分布由 Co-GdOx 超顺磁尖端成像，并与 FePt-MgO 硬磁尖端的磁场成像进行比较。A-MFM 振幅图像的傅立叶分析显示，与最先进的 FePt-MgO 硬磁尖端的 17 nm 相比，Co-GdOx 超顺磁尖端的空间分辨率提高了 13 nm。与单极型 FePt-MgO 硬磁尖端相比，Co-GdOx 超顺磁尖端的磁能成像的磁偶极性质和短程力特性显示出高性能，尖端传递函数分析证实了这一点。所提议的技术为...