SST: Optimization of Giant Magnetoresistive Nanolaminates for Novel Sensor Applications

SST：针对新型传感器应用的巨磁阻纳米层压板的优化

• 批准号: 0529369
• 负责人: Subhadra Gupta
• 金额: --
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0529369&HistoricalAwards=false
• 关键词: SST; Optimization; Giant; Magnetoresistive; Nanolaminates

0529369GuptaIntellectual merit of the proposed researchA fundamental study involving optimization of the CPP-GMR sensor stack is proposed. This will involve a fundamental theoretical study of the physics of the spintronic device, which will lead to an optimized device design, including selection of the materials, layer thicknesses, and device structure for optimized performance. The study in GMR stack deposition will emphasize optimization of thin-film deposition with particular attention being given to interfacial engineering. Furthermore, a thorough investigation of multilayer film nucleation and growth under various processing conditions, will lead to a better understanding of how to generate and control the properties of these films and their subsequent electrical and magnetic characteristics. Subsequent fabrication of the GMR sensor has sufficient complexity and will provide the student with substantial exposure to various state-of-the-art deposition, photolithography, e-beam lithography and dry and wet etch processing techniques and equipment. In-depth structural, magnetic and electrical characterization of these nanolaminates will be carried out using a wide range of advanced analytical equipment. Atomic scale characterization of the GMR stacks by transmission electron microscopy and atom probe tomography will greatly enhance the scientific merit of the proposed research. The technological motivation for this research is grounded in the desire to create novel materials, processes and structures for novel sensors for military and civilian applications. The research is interdisciplinary, involving the Metallurgical and Materials Engineering, Electrical and Computer Engineering and Physics departments. The broader impacts resulting from the proposed activityThe proposed research is interdisciplinary, integrating faculty and students from three departments (Metallurgical and Materials Engineering, Electrical and Computer Engineering and Physics). Graduate students on this project, one a minority female will receive training in disciplines of materials selection, nanolayer processing, device fabrication, and atomic, microstructural, electrical and magnetic characterization, and will gain an understanding of physics and chemistry, metallurgical, materials and electrical engineering. The project will have collaboration with the Army Research Laboratories and Veeco Instruments, which will allow the students to be exposed to a broad range of technologies - from sensor design and fabrication to vacuum technology and cathode design and development, and have direct exposure to career options at the Army Research Laboratories as well as in industry. Recruitment of minority female undergraduate students from a neighboring HBCU is also planned. This, along with having a minority female graduate student as well as a female PI, will serve as a strong and positive role model for minority women entering science and engineering, both nationally and globally.

0529369古普塔提出的研究的智力价值提出了一项涉及CPP-GMR传感器堆栈优化的基础研究。这将涉及自旋电子器件物理的基础理论研究，这将导致优化的器件设计，包括选择材料，层厚度和器件结构以优化性能。GMR叠层沉积的研究将强调薄膜沉积的优化，特别关注界面工程。此外，在各种工艺条件下的多层膜成核和生长的彻底调查，将导致更好地了解如何产生和控制这些薄膜的性能及其随后的电和磁特性。GMR传感器的后续制造具有足够的复杂性，并将为学生提供大量接触各种最先进的沉积，光刻，电子束光刻和干法和湿法蚀刻加工技术和设备。将使用各种先进的分析设备对这些纳米层压材料进行深入的结构、磁性和电学表征。通过透射电子显微镜和原子探针断层扫描对巨磁阻堆进行原子尺度的表征，将大大提高拟议研究的科学价值。这项研究的技术动机是希望为军用和民用新型传感器创造新的材料、工艺和结构。该研究是跨学科的，涉及冶金和材料工程，电气和计算机工程以及物理系。拟议的活动产生的更广泛的影响拟议的研究是跨学科的，整合教师和学生从三个部门（冶金和材料工程，电气和计算机工程和物理）。该项目的研究生，其中一名少数民族女性将接受材料选择，纳米层加工，器件制造，原子，微观结构，电学和磁学表征等学科的培训，并将获得物理和化学，冶金，材料和电气工程的理解。该项目将与陆军研究实验室和Veeco仪器公司合作，这将使学生接触到广泛的技术-从传感器设计和制造到真空技术和阴极设计和开发，并直接接触陆军研究实验室以及工业中的职业选择。还计划从邻近的HBCU招收少数民族女本科生。这一点，沿着有一个少数民族女研究生以及女性PI，将作为一个强大的和积极的榜样，少数民族妇女进入科学和工程，无论是在国家和全球。