Electron doping in magnetic semiconductors
磁性半导体中的电子掺杂
基本信息
- 批准号:1112387
- 负责人:
- 金额:$ 37.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-10-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this proposal, Professor Stoll of Georgetown University will synthesize and characterize nanostructured electron doped magnetic semiconductors. The work is supported by the Macromolecular, Supramolecular and Nanochemistry program in the Division of Chemistry. A new route was discovered to produce both nanoparticles as well as nanorods of lanthanide chalcogenide semiconductors, which is easily adapted for doping studies. These novel materials may have useful applications in microelectronic devices, and should provide important mechanistic details of electronic and magnetic coupling in these unusual materials. Nanoparticles have been prepared by solution thermolysis of molecular precursors to form Eu1-xGdxS materials. The ferromagnetic ordering temperature can be increased by tuning the doping level, x. In addition, using hydrothermal synthesis it is possible to synthesize Eu2O3 nanowires and nanorods that can be chemically converted into EuO nanomaterials maintaining morphology and single crystal structures. This procedure should provide a route to forming Gd doped EuO materials. This proposal will study the effect of electron doping (Gd) on magnetic semiconductors EuS and EuO, as well as the effect of morphology (nanoparticle diameter and nanowire structures).This project involves the study of magnetic semiconductors which have applications in both data storage and information processing. The work is highly interdisciplinary between chemistry and physics, and involves both the synthesis and characterization of novel nanostructured magnetic materials. The team spans the educational ladder from high school seniors to senior graduate students, who work in a collaborative laboratory setting. In order to fully characterize these materials, a new collaboration has been established with a faculty at the University of Pierre and Marie Curie in Paris. The PI is also involved in outreach programs as co-Director of Science in the Public Interest, which introduces science students to science policy in government.
在这个提案中,乔治城大学的Stoll教授将合成和表征纳米结构的电子掺杂磁性半导体。这项工作得到了化学系大分子、超分子和纳米化学项目的支持。研究人员发现了一种既可以制备纳米粒子又可以制备镧系硫系半导体纳米棒的新方法,这种方法很容易用于掺杂研究。这些新材料可能在微电子器件中有有用的应用,并且应该提供这些不寻常材料中电子和磁耦合的重要机械细节。采用分子前驱体溶液热裂解法制备了Eu1-xGdxS材料。通过调整掺杂水平,可以提高铁磁有序温度,x。此外,利用水热合成可以合成Eu2O3纳米线和纳米棒,这些纳米线和纳米棒可以化学转化为EuO纳米材料,保持形貌和单晶结构。该工艺将为形成Gd掺杂EuO材料提供一条途径。本课题将研究电子掺杂(Gd)对磁性半导体EuS和EuO的影响,以及形貌(纳米颗粒直径和纳米线结构)的影响。这个项目涉及磁性半导体的研究,它在数据存储和信息处理方面都有应用。这项工作是化学和物理之间高度交叉的,涉及新型纳米结构磁性材料的合成和表征。该团队涵盖了从高中毕业生到高级研究生的教育阶梯,他们在协作实验室环境中工作。为了充分表征这些材料的特性,我们与巴黎皮埃尔和玛丽居里大学的一个教员建立了新的合作关系。PI还作为公共利益科学的联合主任参与了一些外展项目,向理科生介绍政府的科学政策。
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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YuYe Tong其他文献
YuYe Tong的其他文献
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{{ truncateString('YuYe Tong', 18)}}的其他基金
On Heavier Chalcogen (Se and Te) Interfacial Chemistry and Charge Transfer in Monolayer-Protected Metal Nanoparticles
单层保护金属纳米粒子中重硫族元素(Se 和 Te)界面化学和电荷转移
- 批准号:
1413429 - 财政年份:2014
- 资助金额:
$ 37.5万 - 项目类别:
Standard Grant
REU Site: Chemistry Research at Georgetown University
REU 网站:乔治城大学化学研究
- 批准号:
1156788 - 财政年份:2012
- 资助金额:
$ 37.5万 - 项目类别:
Continuing Grant
DDEP: In Situ Ultra Fast Time-Resolved Infrared Spectroscopic Study on Shape Controlled Pt Nanoparticles
DDEP:形状控制 Pt 纳米粒子的原位超快时间分辨红外光谱研究
- 批准号:
1130454 - 财政年份:2011
- 资助金额:
$ 37.5万 - 项目类别:
Standard Grant
International Collaboration in Chemistry: Nanoscale Single-Crystal Ensemble Electrocatalysis for Fuel Cell Applications
国际化学合作:燃料电池应用的纳米级单晶系综电催化
- 批准号:
0923910 - 财政年份:2009
- 资助金额:
$ 37.5万 - 项目类别:
Standard Grant
An Electrochemical NMR Investigation of Ligand-Protected Metal Quantum Dots: Metal-Ligand Interactions and Ramifications in Molecular Electronics
配体保护的金属量子点的电化学核磁共振研究:分子电子学中的金属-配体相互作用和衍生
- 批准号:
0456848 - 财政年份:2005
- 资助金额:
$ 37.5万 - 项目类别:
Continuing Grant
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