Materials World Network: New Functionality in Complex Magnetic Structures with Perpendicular Anisotropy

技术概述：纳米磁性器件的新功能需要在纳米空间尺度和亚纳秒时间尺度上控制磁顺序。许多基于自旋的器件仍处于起步阶段，对潜在材料和电子特性及其对器件性能的影响的透彻理解对于未来的应用至关重要。在材料研究部的支持下，该材料世界网络项目建立在美国的PIs Fullerton和Lomakin以及法国的Ravelosona和Mangin之间的强大合作基础上，重点研究具有垂直磁各向异性的新型复杂磁异质结构的磁化操纵。该项目的目标是了解磁耦合纳米结构材料的基本物理特性及其在自旋电子器件中的应用，这些器件将使节能磁存储器、磁振荡器和自旋逻辑器件成为可能。特别是，研究小组对通过结合实验和微磁方法开发主动控制复合材料响应的方法感兴趣。每种材料系统都将进行优化，以实现低临界电流和超快速反转、纳米级谐振行为和应变修饰畴壁运动等新现象。非技术总结：纳米磁性的新科学发现使数据存储、记忆、信息处理和计算能效领域的一系列新兴纳米技术成为可能。纳米磁性与半导体科学技术的进步相结合，直到最近才忽视了电子的自旋，它产生了自旋电子学领域。自旋电子学正在引入一系列新的传感器、存储器、逻辑器件，并为未来的电子产品提供了一个自旋远景。这个材料世界网络项目具有变革性的目标，为下一代节能、超快和超小型自旋电子设备提供科学基础。该项目将促进院校之间的学生、教师和研究人员的积极交流，学生研究人员将接触到使用新颖和复杂设备的广泛材料挑战。该提案的一个关键组成部分是促进领先的国际、工业和国家用户设施科学家之间的合作。这不仅将加强科学的卓越性和扩大研究的影响，而且还将为研究生和本科生提供重要的教育和研究生就业机会。该项目将支持法国和美国研究中心和高等教育机构之间创新和可持续的伙伴关系。

TECHNICAL SUMMARY:New functionality in nanomagnetic devices requires control of magnetic order at the nanometer spatial scale and sub-nanosecond temporal scale. Many spin-based devices are still in their infancy and a thorough understanding of the underlying materials and electronic properties and their effect on device performance will be essential for future applications. With support from the Division of Materials Research, this Materials World Network project builds on a strong existing collaboration between the PIs Fullerton and Lomakin in the US and Ravelosona and Mangin in France and focuses on the study of magnetization manipulation in novel and complex magnetic heterostructures with perpendicular magnetic anisotropy. The goal of this project will be on understanding the fundamental physics of magnetically coupled nanostructured materials and their application for spintronic devices that will enable energy-efficient magnetic memory, magnetic oscillators and spin logic devices. In particular, the research team is interested in developing approaches for actively controlling the response of composite materials through a combined experimental and micromagnetic approach. Each materials system will be optimized to enable new phenomena such as low critical currents and ultra-fast reversal, resonant behavior at the nanoscale and strain modified domain wall motion. NON-TECHNICAL SUMMARY:New scientific discoveries in nano-magnetism are enabling a range of emerging nanotechnologies in the areas of data storage, memories, information processing and energy efficiency in computing. Combining nano-magnetism with advances in semiconductor science and technology, that have until recently ignored the spin of the electron, it gives rise to the field of spintronics. Spintronics is ushering in a range of new sensors, memories, logic devices and providing a spin-vision for the electronics of the future. This Materials World Network project has the transformative goal to provide the scientific underpinnings for next generation energy efficient, ultrafast, and ultrasmall spintronic devices. The project will promote active exchange of students, faculty and researchers between institutions and student researchers will be exposed to a broad range of materials challenges using novel and sophisticated equipment. A key component of the proposal is to foster collaborations between leading international, industrial, and national user-facility scientists. This will not only strengthen the scientific excellence and broaden the impact of the research, but it will also provide important educational and post-graduate career opportunities for both graduate and undergraduate students. This project will support innovative and sustainable partnerships between French and US research centers and institutions of higher education.