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.

* 非技术性摘要 * 铁材料的特点是可切换的磁或电的极化，这使得它们对先进的技术应用感兴趣。内布拉斯加大学林肯分校的材料研究科学与工程中心（MRSEC）支持一个名为纳米铁性结构中的极化和自旋现象（P-SPINS）的跨学科研究项目。该项目的重点是研究纳米级的新铁电材料和结构，旨在发展对信息处理和存储，能量收集和先进电子学重要的性质和相关现象的基本理解。P-SPINS的教育和推广计划鼓励有天赋的年轻人追求科学事业，扩大科学中代表性不足的群体的参与，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（IRG）。IRG 1“磁电材料和功能界面”专注于复杂功能异质结构中的磁电性及其超出静态平衡和线性响应领域的非常规用途。该IRG协同探索磁电体材料和薄膜中的动态应变驱动相变，电压控制熵变，具有存储器和逻辑功能的超低功率器件的磁电异质结构，以及界面磁各向异性和交换偏置的电调谐。IRG 2“极化使能电子现象”利用铁电极化作为状态变量，实现新的极化使能电子和新型氧化物，有机和混合异质结构的传输特性。该IRG研究铁电诱导的电阻开关效应，在混合铁电/半导体和有机界面的电子约束的调制，分子铁电结构中的偶极有序，和极化使能的电子性质的操纵。为了应对材料研究中的这些挑战，P-SPINS依赖于跨学科合作，广泛使用共享设施，与国家实验室和国际机构建立伙伴关系，并与工业公司进行互动，以利用预期的科学创新实现潜在的技术进步。作为该中心的一个组成部分，P-SPINS保持了一系列签名教育和推广活动，旨在增加追求和成功从事材料科学职业的个人的数量，质量和多样性。