Scanning Probe Studies of Complex Oxides

复合氧化物的扫描探针研究

• 批准号: 0810119
• 负责人: Alex de Lozanne
• 金额: $ 38万
• 依托单位: University of Texas at Austin
• 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: 2008-11-01 至 2015-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0810119&HistoricalAwards=false
• 关键词: Scanning; Probe; Studies; Complex; Oxides

****NON-TECHNICAL ABSTRACT****Nanotechnology is well known as an important part of the economy, both present and future, but most people do not realize that for ages mankind has made materials with certain desirable properties by controlling the nanostructure of the material. In this sense nanotechnology has been around for a few millennia. What has changed dramatically in the last few decades is our ability to characterize what we make, which has greatly improved our synthesis techniques. Microscopy has been an important component of this recent revolution in nanocharacterization. This project is based on the simple idea of rastering a nano-sized sensor over the sample to measure different properties, such as magnetism and superconductivity. The research team working on this involves young men and women, many of Hispanic background, from the High School to the Ph.D. level.****TECHNICAL ABSTRACT****This project emphasizes the development of novel scanning probe techniques that operate at low temperatures, with the goal of studying new materials. Recent examples include the study of colossal magnetoresistive materials, manganites in particular, by tunneling microscopy and spectroscopy, magnetic force microscopy (MFM) and contact atomic force microscopy. Another example is the study of multiferroic materials with Kelvin force microscopy and MFM. The most recent technique is based on a microscopic Hall sensor, which has been used to study a dilute magnetic semiconductor (Ga0.94Mn0.06As). These techniques will provide a better understanding at the nanoscale of the electronic, magnetic, and transport properties of new materials.

****非技术摘要****纳米技术是当前和未来的重要组成部分，但大多数人都没有意识到，对于人类而言，人类已经通过控制材料的纳米结构来制造具有某些理想特性的材料。 从这个意义上讲，纳米技术已经存在了几千年。 在过去的几十年中，已经发生了巨大变化的是，我们表征我们制造的东西的能力，这极大地改善了我们的合成技术。 显微镜一直是纳米饰面革命最近革命的重要组成部分。 该项目基于在样品上隔开纳米尺寸的传感器以测量不同特性（例如磁性和超导性）的简单概念。 从事这项工作的研究团队涉及年轻男女，这是许多西班牙裔背景，从高中到博士学位。级别。****技术摘要***该项目强调了在低温下运行的新型扫描探针技术的发展，其目的是研究新材料。 最近的例子包括研究巨大的磁化材料，尤其是通过隧道显微镜和光谱，磁力显微镜（MFM）和接触原子力显微镜的研究。 另一个例子是使用开尔文力显微镜和MFM研究多效材料。 最新技术是基于微观霍尔传感器，该传感器已用于研究稀磁半导体（GA0.94MN0.06AS）。 这些技术将在纳米级对新材料的电子，磁性和运输特性的纳米级提供更好的了解。