Application of new magnetism produced by low dimentional materials to realize ultra high density recording media

应用低维材料产生的新磁性实现超高密度记录介质

• 批准号: 11695037
• 负责人: KAWAZOE Yoshiyuki
• 金额: $ 4.42万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11695037/
• 关键词: Magnetic recording; Magnetic cluster; High density; First Principles calculation; Simulation; Supercomputer; Nanotechnology; Low dimensional; クラスター; 磁性; 多層膜; 異方性; 第一原理; シュミレーション; モンテカルロ法; 魔法数; 低次元系; 遷移金属クラスター; 分子動力学法; 高密度記録メディア; 大規模系 /

This research group has been working to establish an international collaboration to realize new materials development based on the magnetic clusters using the first principles simulations. Especially, it aims to realize an ultra high density recording media by using three dimensionally deposited magnetic clusters. In the three year research period, we have investigated widely the binary clusters and have been successful to found out new physical properties. Among them, metal encapsulated silicon clusters with 10-20 atoms have attracted much attention, and are named as silicon fullerenes. Some of them are very stable and have magnetic moments. We have performed the first principles simulation for conductance properties of molecular electronics devices and established a basis for the future spintronics. To realize the ultra high density magnetic recording media, it is fundamental to understand the process of deposition. To do this aim, we have performed a Monte Carlo simulation and deduce the best condition for the experiment and several physical properties.In the three year period, researchers from China visited our Institute and performed a large scale simulation by using our supercomputer. We have also visited China to exchange ideas and successful to establish an international research team. We have published 26 papers in international high level journals.

这个研究小组一直致力于建立一个国际合作，利用第一性原理模拟实现基于磁性团簇的新材料开发。特别是，它的目标是通过使用三维沉积的磁团簇来实现超高密度记录介质。在三年的时间里，我们对二元团簇进行了广泛的研究，并成功地发现了新的物理性质。其中，具有10-20个原子的金属包覆硅团簇备受关注，被命名为硅富勒烯。它们中的一些非常稳定，具有磁矩。我们对分子电子器件的电导特性进行了第一性原理模拟，为未来的自旋电子学奠定了基础。要实现超高密度磁记录介质，了解沉积过程是基础。为此，我们进行了蒙特卡罗模拟，得出了实验的最佳条件和几个物理性质。在三年的时间里，中国的研究人员访问了我所，并利用我们的超级计算机进行了大规模的模拟。我们还走访了中国，交流意见，成功建立了一个国际化的研究团队。在国际高水平期刊上发表论文26篇。

项目成果

Siu-Tat Chui, Jian-Tao Wang, Lei Zhou, Keivan Esfarjani, Yoshiyuki Kawazoe: "Realization of an Effective Ultrahigh Magnetic Field on a Nanoscale"J. Phys. : Condens. Matter.. 13. L49-L55 (2001)

Siu-Tat Chui、Jian-Tao Wang、Lei Zhou、Keivan Esfarjani、Yoshiyuki Kawazoe：“在纳米尺度上实现有效的超高磁场”J。

Jian-Tao Wang, Lei Zhou, Ding-Sheng Wang, Yoshiyuki Kawazoe: "Exchange Interaction and Magnetic Phase Transition in Layered Fe/Au Superlattices"J. Magn. Magn. Mater.. 226-230. 633-634 (2001)

王建涛，周雷，王定胜，川添佳之：“层状Fe/Au超晶格中的交换相互作用和磁相变”J.

Keiichiro Shiga, Kaoru Ohno, Yoshiyuki Kawazoe: "Ab Initio Molecular Dynamics Simulation of Ni_6"Trans. Mater. Res. Soc. Jpn.. 26・4. 1113-1116 (2001)

Keiichiro Shiga、Kaoru Ohno、Yoshiyuki Kawazoe：“Ni_6 的从头开始的分子动力学模拟”Res.Jpn. 1113-1116。

Mizuseki Hiroshi: "Growth Processes of Magnetic Clusters Studied by Direct Simulation Monte Carlo Method"J. Appl. Phys.. 87[9]. 6561-6563 (2000)

水关宏：“直接模拟蒙特卡罗方法研究磁团簇的生长过程”J。

Ishihara Masahito: "Multi-Valued Maginetic Recording Materials Predicted by Self-Organized Magnetization Dynamics"Mater. Trans., JIM.. 40[11]. 1319-1322 (1999)

石原正人：“自组织磁化动力学预测的多值磁记录材料”材料。