项目名称： 多铁性六角RMnO3低维纳米结构的制备及其物性研究

项目编号： No.11504327

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 王嘉维

作者单位： 浙江工业大学

项目金额： 24万元

中文摘要： 多铁性材料因为其独特的耦合特性，为发展新型的多功能电子器件提供了可能。因此探寻室温下具有大的磁化强度、极化强度以及磁电耦合效应的多铁性材料一直是研究工作的重点。六角RMnO3材料在单相多铁性材料中占据着非常重要的地位，其特有的新奇物性，预示着该材料在物性研究和应用上的潜力。然而当前，RMnO3材料的研究绝大部分集中在块体，主要原因是低维结构生长技术很不成熟，这对于材料往应用方向发展要求的可微型、可集成是非常不利的。此外，RMnO3材料的新奇特性在低维受应力情况下能否优化或者调制，是一个很有意思的问题。本项目拟提出利用六角RMnO3材料对应力的敏感性，生长低维纳米结构如单层薄膜、复合结构等，着力研究物性特征及其物理机制，并尝试在此基础上的物性调控和器件开发。

中文关键词： 多铁材料；单相多铁性材料；磁电效应

英文摘要： Multiferroic materials exhibit appealing coupling properties, thereby opening new possibilities for development of multifunctional electronic devices. Therefore, searching multiferroic materials with large magnetization intensity, ferroelectric polarization intensity and magnetoelectric coupling at room temperature is still the key issue. Hexagonal RMnO3 materials play an important role in the single-phase multiferroic materials, since the novel property shows the potential of researching and application. However, most of the work now was focused on the bulk RMnO3 materials. This was due to the limitation of low dimension structure growth technique, which was unfavourable to the materials application development demanding microminiaturization and integration. Moreover, it was an interesting question that whether the novel behavior of RMnO3 could be optimized or modulated under stress in low dimension. Therefore, on the basis of the sensitivity of stress from hexagonal RMnO3, growing the low dimension nanostructure such as monolayer film, heterostructure, hunting the novel properties and new physics, and trying manipulation and device development was proposed in this proposal.

英文关键词： multiferroic materials;single phase multiferroic materials;magnetoelectric effect