Artificially Structured Multiferroic Composites based on the Heusler alloys

基于 Heusler 合金的人工结构多铁复合材料

• 批准号: 217652-2013
• 负责人: Niewczas, Marek
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638171
• 关键词: Artificially; Structured; Multiferroic; Composites; based

Current demands for improved competitiveness and sustainability require from a knowledge-based society a development of new materials with new functionalities and better performance that are drivers of innovation in science and technology. Ferromagnetic Heusler alloys assembled into the composite architectures may offer unique properties, not observed in single-phase alloys, resulting form the interplay of the intrinsic properties of individual constituents. The aim of this research program is to carry out experimental work designed to understand the coupling between magnetic, thermodynamic, structural, elastic and electric properties that influence magnetocalorc and magnetoelectric phenomena in Heusler based layered composites and to advance knowledge of the processes that control these properties across the length scales. This knowledge will provide a scientific platform for the design of new advanced materials with desired functionalities that can be tailored for our needs. Within a framework of this program we will develop procedures for synthesis of composite layer structures based on Heusler alloys, we will master various advanced techniques for the characterization of their properties and we will study how to functionalize these composite systems so that they can find their niche in different applications and devices. These applications comprise, but are not limited to, sensing and actuating applications, applications for thermoelectric energy conversion devices, integrated magneto-electric and electro-mechanical systems, logic and memory applications and spintronic applications. The rapid emergence of new class of multifunctional materials makes the proposed research program particularly timely. Development of a better knowledge of structure and properties of Heusler based multiferroic composites, linked to the training of young scientist, who will understand how to tailor their properties for our demands, will be of great benefit to Canada and it will have an impact not only on the area of advanced materials, but also on manufacturing, health, safety and the environment.

目前，基于知识的社会需要提高竞争力和可持续性的需求，具有新功能的新材料的发展和更好的绩效，这是科学和技术创新的驱动力。组装到复合体系结构中的铁磁远马合金可能具有独特的特性，而在单相合金中未观察到，从而形成了单个成分固有特性的相互作用。该研究计划的目的是开展实验性工作，旨在了解影响基于Heusler的分层复合材料中的磁磁环和磁电现象的磁，热力学，结构，弹性和电特性之间的耦合，并促进对在长度尺度控制这些特性的过程的知识。这些知识将为设计新高级材料的设计提供一个科学平台，并具有所需的功能，可以根据我们的需求量身定制。在该程序的框架内，我们将开发基于远母合金合成复合层结构的过程，我们将掌握各种高级技术来表征其性质，我们将研究如何在这些复合系统中官能化这些复合系统，以便他们可以在不同的应用和设备中找到其利基市场。这些应用包括但不限于感应和致动应用，热电能量转换设备的应用，集成的磁电机和电力机械系统，逻辑和内存应用以及Spintronic应用程序。新的多功能材料的快速出现使提出的研究计划特别及时。与培训年轻科学家的培训有关，了解基于赫斯勒的多效复合材料的结构和特性的知识，他们将了解如何根据我们的需求来量身定制其特性，对加拿大有很大的好处，它不仅会对高级材料领域产生影响，还会影响制造业，健康，安全和环境。