Development of Measurement Technology for Nanoscale Magnetism

为了研究纳米尺度区域的磁性，我们已经开发出了各种各样的纳米特征化技术。Prof. Sato investigated Fe/Au人工超晶格by magnetic second Harmonic generation （MSMG） technique。他可以很好地定义四个伪对称性模式，并解释了Fe/Au超级晶格表面和界面上对称性的术语。Prof. Ito performed molecular dynamics studies on atomic layer deposition of Pd on Ni film with a surface roughness and an in plane strain。他被认为是将镍表面应变的平面上确定晶体学方向和应变的统一性确定在沉积层中。Prof. Tsunashima携带了一个磁静态模拟，以证明一个小域的可能性，即小域作为小域（0.1 μm）由热磁记录。他也在Dy/Fe multilayers中研究XMCD Spectra。Mukasa教授开发了一种带有光辐射GaAs探针的自旋极化STM，以实现MgO基底上铁薄膜的原子平坦表面上的obatain自旋极化图像。Exchange force microscope has also been investigated， Prof. Oguchi obtained magneto-optical？r spectra in CdCr？D22？D24？D2？PtMnSb using ab-initio energy-？calculation。Kerr Spectra的电子起源通过比较计算和实验之间的比较进行了讨论。Dr. Hono conducted micro-XRD measurements Co-Al-O granular films。在添加剂、横向多非线性、Fe粒子、钝化磁半导体、超曲素金属薄膜中的两个尺寸等离子体、MgO中含有过渡金属粒子的纳米氢结构也被调查。

To investigate magnetism in nanoscale region, we have been developing various kinds of nanocharacterization techniques. Prof. Sato investigated Fe/Au artificial superlattice by means of magnetic second harmonic generation (MSMG) technique. He observed well defined four-foid symmetry patterns in azimuthal dependence of MSHG intensity, and explained in terms of symmetry at the surface and interfaces of the Fe/Au superlattices. Prof. Ito performed molecular dynamics studies on atomic layer deposition of Pd on Ni film with a surface roughness and an in-plane strain. He elucidated that the in-plane strain of the Ni surface determines crystallographic orientation and uniformity of strain in the deposited layer. Prof. Tsunashima carried out a magneto-static simulation to prove a possibility of formation of a small domain as small as 0.1 μm by thermomagnetic recording. He also studied XMCD spectra in Dy/Fe multilayers. Prof. Mukasa developed a spin-polarized STM with photo-irradiated GaAs probes to obatain spin-polarized image of atomically flat surface of Fe thin film on the MgO substrate. Exchange force microscope has also been investigated, Prof. Oguchi obtained magneto-optical Kerr spectra in CdCrィイD22ィエD2SeィイD24ィエD2, CuCrィイD22ィエD2SeィイD24ィエD2 and PtMnSb using ab-initio energy-band calculation. Electronic origin of Kerr spectra were discussed through comparison between the calculation and the experiment. Dr. Hono conducted micro-XRD measurements Co-Al-O granular films. In addition, lateral multiple nonowire, Fe particles, diluted magnetic semiconductors, two dimensional plasmon in ultrathin metallic films, nanoheterostructure with transition metal particles buried in MgO are also investigated.