Studies of mesoscopic structures with synchrotron X-rays

利用同步加速器 X 射线研究细观结构

• 批准号: 07044135
• 负责人: HASHIZUME Hiroo
• 金额: $ 2.82万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044135/
• 关键词: mesoscopic materials; mechanofusion; synchrotron X-ray powder diffration,; metal glass; magnetic thin films; X-ray magnetic scattering; メソスコピック構造; シンクロトロン放射; 高分解X線回折; メソスコピック; 微粉末; 炭化物; 窒化物; 非晶; 構造乱れ; シンクロトリン放射; X線回折

Mesoscopic structures in mechanofusion powders, metal glasses and magnetic multilayrs have been investigated using high-resolution synchrotron X-ray scattering techniques. It was revealed that the mesoscopic structures in ball-milled Fen powder undergo a wide variety of changes depending on heattreatment conditions. Ball-milled TiAl involves highly disordered alloy phases which change into the TiAl_3 crystalline phase on annealing. X-ray powder data were collected from FeSiBCoCuNb nanocrystalline alloy, which shows an improved magnetic permeability over conventional finemet (FeSiBCuNb). The structure/property correlation was investigated by using samples annealed in various conditions. As to the magnetic materials, the magnetization structures of Fe/Gd multilayrs were explored using the resonant X-ray magnetic scattering technique. It was made clear that 5 nmthick Gd layrs are nonuniformly magnetized in both the aligned and twisted states. In the aligned state, the Gd layrs are more strongly magnetized near the Fe interfaces than at the film centers. The twist angle of the Gd magnetic moment in the twisted state is also nonuniform over the film thickness and it is perpendicular to the applied magnetic field at a temperature 30ﾟC below the compensation temperature.

机械式粉末中的介质结构，金属玻璃和磁性多层同步射线散射技术。通过对磁性材料进行采样的磁性，对E谐音的磁性结构进行了调查，该结构是对X射线X射线的磁性散射技术的研究。在对齐状态下的对齐状态和扭曲状态下，在Fe界面附近磁性磁性比在膜厚度上不均匀，并且在薄膜中的磁力均不均匀。磁场在30°C c）温度下。

项目成果

A.Yu,Nikulin 他: "Modwl-independent determination of the strain distribution for a Si0.9Ge0.l/Si superlattice using X-ray diffractometry data" Physical Review B. 53. 8277-8282 (1996)

A. Yu、Nikulin 等人：“使用 X 射线衍射数据独立于 Modwl 确定 Si0.9Ge0.l/Si 超晶格的应变分布”物理评论 B. 53. 8277-8282 (1996)

A.Calka: "Applocation of synchrotron rediation for structure analysis of mesoscopic structures produced by ball milling" Mater. Sci. Forum. 235-238. 517-522 (1997)

A.Calka：“应用同步加速器辐射对球磨产生的介观结构进行结构分析”Mater。

A.CALKA: "Application of Synchrotron radiation for structure analysis of wesoscopic structures produced by ball willing" Mater.Sci.Forum. 235-238. 517-522 (1997)

A.CALKA：“应用同步辐射对球意愿产生的微观结构进行结构分析”Mater.Sci.Forum。

A.CALKA: "Application of synchrotion radiation for structure analysis of mesoscopic structures produced by ball milling" Matu,Sci,Horum. 235-238. 517-522 (1997)

A.CALKA：“应用同步辐射对球磨产生的介观结构进行结构分析”Matu、Sci、Horum。

O.Sakata 他: "Application of grazing-angle X-ray standing waves to the in-plane structure of a 100Å thicle epitaxial film" Acta Crystallographica. (1997)

O. Sakata 等人：“掠射角 X 射线驻波在 100Å 粗晶外延膜面内结构中的应用”《晶体学报》(1997)。