MRSEC: Polarization and Spin Phenomena in Nanoferroic Structures (P-SPINS)

MRSEC：纳米铁结构中的极化和自旋现象 (P-SPINS)

• 批准号: 1420645
• 负责人: Evgeny Tsymbal
• 金额: $ 960万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-11-01 至 2021-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1420645&HistoricalAwards=false
• 关键词: MRSEC; Polarization; Spin; Phenomena; Nanoferroic

****Nontechnical abstract****Ferroic materials are characterized by switchable magnetic or electric polarizations which make them interesting for advanced technological applications. The Materials Research Science and Engineering Center (MRSEC) at the University of Nebraska-Lincoln supports an interdisciplinary research project named Polarization and Spin Phenomena in Nanoferroic Structures (P-SPINS). This project is centered on studies of new ferroic materials and structures at the nanoscale aimed at developing the fundamental understanding of their properties and related phenomena important for information processing and storage, energy harvesting, and advanced electronics. P-SPINS's education and outreach programs encourage gifted young people to pursue scientific careers, broaden the participation of underrepresented groups in science, and improve materials literacy among the general public. ****Technical abstract****P-SPINS is organized into two interdisciplinary research groups (IRGs). IRG1 "Magnetoelectric Materials and Functional Interfaces" is focused on magnetoelectricity in complex functional heterostructures and its unconventional use beyond the realm of static equilibrium and linear response. This IRG synergistically explores dynamic strain-driven phase transitions in magnetoelectric bulk materials and thin films, voltage-controlled entropy changes, magnetoelectric heterostructures for ultra-low power devices with memory and logic functions, and electrical tuning of interface magnetic anisotropy and exchange bias. IRG2 "Polarization-Enabled Electronic Phenomena" exploits ferroelectric polarization as a state variable to realize new polarization-enabled electronic and transport properties of novel oxide, organic, and hybrid heterostructures. This IRG investigates ferroelectrically induced resistive switching effects, modulation of electronic confinement at the hybrid ferroelectric/semiconductor and organic interfaces, dipole ordering in molecular ferroelectric structures, and manipulation of polarization-enabled electronic properties. To address these challenges in materials research P-SPINS relies on interdisciplinary collaborations, extensive use of shared facilities, partnerships with national laboratories and international institutions and interactions with industrial companies to leverage the expected scientific innovations for potential technological advances. As an integral part of the center, P-SPINS maintains a portfolio of signature education and outreach activities designed to increase the number, quality, and diversity of individuals pursuing and succeeding at careers in materials science.

****非技术摘要****铁反材料的特征是可切换的磁或电极化，这使得它们在先进的技术应用中很有趣。内布拉斯加州林肯大学的材料研究科学与工程中心（MRSEC）支持纳米型结构（P-Spins）中名为“极化和旋转现象”的跨学科研究项目。该项目集中在纳米级的新铁材料和结构的研究上，旨在发展对其性质的基本理解以及对于信息处理和存储，能源收集和高级电子产品重要的相关现象。 P-Spins的教育和外展计划鼓励有天赋的年轻人从事科学职业，扩大代表性不足的科学的参与，并提高公众的材料素养。 ****技术摘要**** P-Spins分为两个跨学科研究小组（IRGS）。 IRG1“磁电材料和功能接口”集中在复杂功能异质结构中的磁电力及其在静态平衡和线性响应领域之外的非常规的使用。该IRG协同探讨了磁性小块材料和薄膜中的动态应变驱动相变，电压控制的熵变化，具有内存和逻辑功能的超低功率设备的磁性异质结构，以及界面磁反应和交换偏见的电气调音。 IRG2“支持极化的电子现象”利用铁电性极化为状态变量，以实现新型氧化氧化物，有机和混合异质结构的新型电子和运输特性。该IRG研究了铁电诱导的电阻开关效应，在杂交铁电/半导体和有机接口上对电子限制的调节，分子铁电结构中的偶极阶排序以及对极化的电子特性的操纵。为了应对材料中的这些挑战，研究P-Spins依赖于跨学科的合作，广泛使用共享设施，与国家实验室和国际机构的合作伙伴关系以及与工业公司的互动，以利用预期的科学创新来实现潜在的技术进步。作为中心不可或缺的一部分，P-Spins保持了签名教育和外展活动的组合，旨在增加追求材料科学职业的个人的数量，质量和多样性。