Frontiers in Multi-Ferroic Materials: from Novel Syntheses to Nano Structure - Functional Property Relations

多铁性材料的前沿：从新型合成到纳米结构 - 功能特性关系

• 批准号: 203773-2012
• 负责人: Ye, ZuoGuang
• 金额: $ 9.11万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=570002
• 关键词: Frontiers; Multi; Ferroic; Materials; Novel

Research in the field of functional materials plays an important role in solving current and future global challenges related to societal problems concerning energy, environment and health. This proposal describes a comprehensive research program that explores the frontiers of an important class of functional materials, the ferroic materials, including the piezoelectrics (which convert mechanical energy into electrical energy, and vice versa), ferroelectrics (with switchable polarization) and magnetoelectrics (with interacting polarization and magnetization). These materials are useful in a vast range of industrial and commercial applications, e.g. as nonvolatile random-access memory devices in future computers, 'smart' sensors and actuators for active control of vibration or noise, high-resolution ultrasonic transducers for medical imaging, bio-sensing or energy harvesting. The intriguing ferroic properties, which are essential to these applications, result from the microscopic and nanoscopic crystal chemistry of materials, i.e. the nature of constituent ions and chemical bonding, the atomic and spin arrangements, and the related phase components and transitions. Therefore, understanding the relationship between nanostructure and macroscopic functional properties is central to ferroic materials research, and it is along this line that our research program is established. We will develop new synthetic strategies for the preparation of high-performance ferroic materials in the forms of single crystals, ceramics and thin films, and characterize their crystal and magnetic structures, dielectric, piezoelectric, ferroelectric and magnetic properties. Complete characterization of the physical properties will allow us to exploit the potentials of the materials synthesized in device applications. This program will provide a better understanding of the relationships between the synthetic chemistry, structures and physical properties, which in turn will allow us to design and tailor-make new ferroic materials with enhanced properties for many applications in advanced technologies and in the next generation consumer products, improving our standards of living. This interdisciplinary research program also provides great opportunities for the training of HQP.

功能材料领域的研究在解决当前和未来涉及能源、环境和健康的社会问题方面发挥着重要作用。这项建议描述了一项探索一类重要功能材料前沿的综合研究计划，即铁性材料，包括压电体(将机械能转换为电能，反之亦然)、铁电体(具有可切换的极化)和磁电体(具有相互作用的极化和磁化)。这些材料在广泛的工业和商业应用中非常有用，例如作为未来计算机中的非易失性随机存取存储设备、用于主动控制振动或噪声的智能传感器和执行器、用于医学成像、生物传感或能量采集的高分辨率超声换能器。这些有趣的铁性对这些应用是必不可少的，这是材料微观和纳米晶体化学的结果，即组成离子和化学键的性质，原子和自旋排列，以及相关的相成分和相变。因此，了解纳米结构和宏观功能特性之间的关系是铁性材料研究的核心，我们的研究计划就是沿着这条线建立的。 我们将开发新的合成策略来制备单晶、陶瓷和薄膜形式的高性能铁性材料，并对其晶体和磁结构、介电、压电、铁电和磁性进行表征。物理性质的完整表征将使我们能够开发在设备应用中合成的材料的潜力。这项计划将使我们更好地了解合成化学、结构和物理性能之间的关系，这反过来将使我们能够设计和定制具有增强性能的新型铁性材料，用于先进技术和下一代消费产品的许多应用，提高我们的生活水平。这个跨学科的研究项目也为HQP的培训提供了很好的机会。