Materials World Network: Scanned Probe Studies of FMR Driven Spin Injection in Individual Fe-filled Carbon Nanotubes
材料世界网络:单个铁填充碳纳米管中 FMR 驱动的自旋注入的扫描探针研究
基本信息
- 批准号:0807093
- 负责人:
- 金额:$ 42万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2008
- 资助国家:美国
- 起止时间:2008-08-15 至 2012-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
There is growing recognition of the opportunities offered by the spin degree of freedom of the electron to enhance information processing. This Materials World Network award, which supports collaborative research between the Ohio State University (OSU) in Columbus, OH and the Institute for Solid State Research, Leibniz Institute for Solid State and Materials Research, Dresden, Germany (IFF-IFW), will study spin transport within iron nanowires and across various interfaces within them. Iron (and copper) filled multi wall carbon nanotubes will be grown and characterized in Germany and the US team will study these structures using Magnetic Resonance Force Microscopy (MRFM) techniques. MRFM is a novel scanning probe technique that detects the magnetic spin of electrons and acquires resonance images at nanometer scale resolution. In this project, Ferromagnetic Resonance Force Microscopy (FMRFM) will be applied to individual nanowires; in particular, spatially resolved FMR studies within individual ferromagnetic nanowires will be carried out. These studies will improve understanding of magnetic properties, particularly damping, of the nanowires, and deepen insight into spin transport across interfaces with ferromagnetic metals through microscopic studies of spin pumping in ferromagnetic nanowires. The project also presents an opportunity to study FMR pumped spin injection across interfaces in ferromagnetic nanowires. This work will provide opportunities for several graduate students both in Ohio and Germany and an undergraduate student to participate in cutting edge nanomagnetics research. The prinicipal investigator on this project will also develop a course for undergraduate student laboratory in modern nanomagnetism.Ferromagnetic nanowires possess unusual magnetic properties and are well suited for fundamental studies aimed at understanding nanoscale magnetism. These nanowires have rich technological potential for use as elements in nanoscale spin-electronic structures and also as magnetic probe tips in magnetic resonance molecular imaging applications. This project combines unique ferromagnetic resonance imaging capabilities available at Ohio State University with nanowire growth and characterization expertise of collaborating researchers in Germany. The focus is on the study of iron filled carbon nanotubes, which is an exciting new ferromagnetic nanowire system. An iron filled multi wall carbon nanotube is a crystalline iron wire 5 to 10 nm in diameter encased in a protective carbon nanotube shell. The research team will study spin transport within the nanowires and across various interfaces. These studies will improve understanding of magnetic properties and deepen insight into spin transport across interfaces with ferromagnetic nanowires. The project offers international research experience for several graduate and undergraduate students through exchange visits and trains them in modern nanomagnetism related areas. This work is supported through a grant from the division of Materials Research in the Mathematical and Physical Sciences directorate.
人们越来越认识到,电子的自旋自由度为增强信息处理提供了机会。这个材料世界网络奖,支持哥伦布的俄亥俄州州立大学(OSU)和固态研究所,莱布尼茨固态与材料研究所,德累斯顿,德国(IFF-IFW)之间的合作研究,将研究铁纳米线内的自旋输运和它们内部的各种界面。 铁(和铜)填充的多壁碳纳米管将在德国生长和表征,美国团队将使用磁共振力显微镜(MRFM)技术研究这些结构。 MRFM是一种新型的扫描探针技术,可以探测电子的磁自旋,并获得纳米级分辨率的共振图像。 在这个项目中,铁磁共振力显微镜(FMRFM)将被应用到单个纳米线;特别是,在单个铁磁纳米线的空间分辨FMR研究将进行。这些研究将提高理解的磁性,特别是阻尼,的纳米线,并加深了解自旋输运通过铁磁金属的铁磁纳米线的自旋泵的微观研究的界面。该项目还提供了一个机会,研究铁磁共振泵自旋注入铁磁纳米线的界面。 这项工作将为俄亥俄州和德国的几名研究生和一名本科生提供参与尖端纳米磁学研究的机会。 该项目的主要研究者还将为本科生实验室开发一门现代纳米磁学课程。铁磁纳米线具有不寻常的磁性,非常适合用于旨在理解纳米磁学的基础研究。 这些纳米线具有丰富的技术潜力,可用作纳米自旋电子结构中的元件,也可用作磁共振分子成像应用中的磁性探针尖端。该项目结合了俄亥俄州州立大学独特的铁磁共振成像能力与德国合作研究人员的纳米线生长和表征专业知识。 重点是铁填充碳纳米管的研究,这是一个令人兴奋的新的铁磁性纳米线系统。 铁填充的多壁碳纳米管是包裹在保护性碳纳米管壳中的直径为5至10 nm的结晶铁丝。 研究小组将研究纳米线内和各种界面之间的自旋传输。这些研究将提高对磁性的理解,并加深对铁磁纳米线界面自旋输运的了解。 该项目通过交流访问为一些研究生和本科生提供国际研究经验,并在现代纳米磁学相关领域对他们进行培训。 这项工作得到了数学和物理科学理事会材料研究部门的资助。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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P. Chris Hammel其他文献
Seeing single spins
看到单个自旋
- DOI:
10.1038/430300a - 发表时间:
2004-07-14 - 期刊:
- 影响因子:48.500
- 作者:
P. Chris Hammel - 通讯作者:
P. Chris Hammel
Design of a variable temperature scanning force microscope.
变温扫描力显微镜的设计。
- DOI:
10.1063/1.3212561 - 发表时间:
2009 - 期刊:
- 影响因子:1.6
- 作者:
Evgeny Nazaretski;K. Graham;J. Thompson;J. A. Wright;D. Pelekhov;P. Chris Hammel;R. Movshovich - 通讯作者:
R. Movshovich
Nanoscale MRI
纳米级磁共振成像
- DOI:
10.1038/nnano.2015.7 - 发表时间:
2015-02-05 - 期刊:
- 影响因子:34.900
- 作者:
Vidya Praveen Bhallamudi;P. Chris Hammel - 通讯作者:
P. Chris Hammel
The role of diffusion in ferritin-induced relaxation enhancement of protons
- DOI:
10.1016/j.jmr.2012.02.005 - 发表时间:
2012-04-01 - 期刊:
- 影响因子:
- 作者:
Michael A. Boss;P. Chris Hammel - 通讯作者:
P. Chris Hammel
Seeing single spins
看到单个自旋
- DOI:
10.1038/430300a - 发表时间:
2004-07-14 - 期刊:
- 影响因子:48.500
- 作者:
P. Chris Hammel - 通讯作者:
P. Chris Hammel
P. Chris Hammel的其他文献
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{{ truncateString('P. Chris Hammel', 18)}}的其他基金
MRI: Acquisition of High Field Physical Properties Measurement System with Cryogenic AFM/MFM
MRI:使用低温 AFM/MFM 获取高场物理特性测量系统
- 批准号:
1040296 - 财政年份:2010
- 资助金额:
$ 42万 - 项目类别:
Standard Grant
Magnetic Resonance Force Microscopy for Characterization and Read-out
用于表征和读出的磁共振力显微镜
- 批准号:
0323783 - 财政年份:2003
- 资助金额:
$ 42万 - 项目类别:
Standard Grant
相似国自然基金
国际心脏研究会第二十三届世界大会(XXIII World Congress ISHR)
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- 项目类别:专项基金项目
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