随着磁记录工业以及纳米磁性材料研究的飞速发展，迫切要求在纳米尺度对磁性材料的动态磁畴/磁性进行全面深入的理解。磁力显微镜（MFM）是研究纳米尺度的磁性以及磁性器件如磁记录介质与磁头强有力的工具。对于MFM测试，MFM探针及MFM技术在实现高分辨率动态成像中起着关键的作用。因此，制备高质量的MFM探针及开发新的MFM技术显得尤为重要。本项目拟通过控制具有（111）织构的L10 FePt合金的晶体取向以及加速L10 FePt合金的有序化，进而增加探针的矫顽力，避免探针在测试时磁矩发生翻转；通过交变磁力对探针有效劲度系数周期性调制机理的研究，搭建交变磁力显微镜平台，以实现对动态磁畴/磁性的高分辨率成像。这种高矫顽力MFM探针可应用于高性能硬磁体以及垂直磁记录写磁头高交流磁场的测试，本项目的研究结果将对商用MFM探针的开发及动态磁畴/磁性的高分辨率成像提供实验与技术上的支持。

With the rapid development of magnetic recording industry and nano-magnetic materials research, it is urgent to have a comprehensive and in-depth understanding of dynamic magnetic domain/magnetism of magnetic materials at nano-scale. Magnetic force microscopy (MFM) is a powerful tool to investigate nano-scale magnetism and magnetic devices such as magnetic recording media and head. For MFM observation, MFM tip and MFM technique play a key role in achieving high resolution dynamic imaging. Therefore, it is particularly important to fabricate high quality MFM tip and develop new MFM technique. The goal of this project is to increase the tip-coercivity by controlling the crystallographic orientation of L10 FePt alloy with (111) texture and accelerating the ordering of L10 FePt alloy, so as to avoid the magnetic moment reversal of the tip during testing. Studying the periodic modulation mechanism of the effective spring constant of tip by alternating magnetic force, a platform of alternating magnetic force microscopy (A-MFM) will be built to realize high resolution imaging of dynamic domain/magnetism. This kind of high coercivity MFM tip can be applied to the measurement of high-performance hard magnets and high AC magnetic field for perpendicular magnetic recording write head. The research results of this project will provide experimental and technical support for the development of commercial MFM tips and the high resolution imaging of dynamic magnetic domain/magnetism.