Atomic resolved imaging of exchange force interaction force by magnetic resonance scanning force microscopy

研制了一种新型扫描探针显微镜系统，实现了磁共振扫描力显微镜（MR-SFM）。到目前为止，我们已经成功地用扫描隧道显微镜（STM）模式获得了Si(111)-7x7的原子分辨率图像，并证实了所开发的显微镜电池具有足够的刚性。我们组成了一个光学干涉仪系统，对光纤边缘与悬臂梁之间的干涉仪信号进行检测。此外，我们还证实了悬臂梁的q因子随温度的降低而增大。然而，在超高真空（10^<-8> Pa）下，z -粗方法（惯性驱动）系统（生产阿托立方）的性能不稳定，SPM系统的开发尚未完成。由于组件异常的z -粗接近行为，我们确信，SPM系统完美地执行，如果z -粗接近移动。我们提出了一种制作最适合磁流变测量的铁磁针尖的新方法。这种方法可以得到在柱头顶端有铁磁体的柱头。元素分析结果表明，柱端含有硅原子，可能存在硅化铁。然而，由于我们可以通过磁力显微镜获得与柱尖的磁性对比，我们得出结论，柱尖具有铁磁性。我们进行了NiO（001）表面与尖端之间交换相互作用力的检测实验，积累了实验知识。通过对尖端材料间交换作用力强度的比较，得出了尖端的磁性是最重要的，需要对尖端的磁性进行控制。

We have developed a novel scanning probe microscope (SPM) system which enables to realize magnetic resonance scanning force microscopy (MR-SFM). Up to now, we have succeeded in obtaining an atomic resolved image of Si(111)-7x7 with scanning tunneling microscopy (STM) mode and we confirmed that the developed microscope cell has an adequate rigidity. We composed a optical interferometer system and detected the signal of interferometer between the edge of optical fiber and cantilever. In addition, we confirmed that Q-factor of the cantilever is increasing with falling in temperature. However, the performance of Z-coarse approach (inertial drive) system (production of attocube) is unstable under the ultra high vacuum (10^<-8> Pa) and we have not finished the development of SPM system yet. Since the component exception for the Z-coarse approach behavior, we are sure of that SPM system perform perfectly if Z-coarse approach moves.We developed a new method making a ferromagnetic tip which has the most suitable structure for MR-SFM measurement. This method can gives us the pillar tip which has a ferromagnet on the tip apex. The results of the elements analysis show that the pillar tip includes silicon atoms and that there is a possibility of iron silicides. However, we concluded that the pillar tip is ferromagnetic property because we can obtain the magnetic contrast with a pillar tip by magnetic force microscopy.We performed the experiments for detecting the exchange interaction force between NiO(001) surface and tips and accumulated the experimental knowledge. Form the results of comparison of strength of exchange interaction force between the materials of tip, we concluded that the magnetic property of tip apex is the most important and we need the control of a magnetic property of tip.