Reducing leakage current and enhancing polarization in multiferroic 3D super-nanocomposites by microstructure engineering
Reducing leakage current and enhancing polarization in multiferroic 3D super-nanocomposites by microstructure engineering
复制标题
通过微结构工程减少多铁性 3D 超纳米复合材料中的漏电流并增强极化
DOI：
10.1088/1361-6528/ac5f98
复制
发表时间：
2022
期刊：
影响因子：
3.5
通讯作者：
Chen, Aiping
中科院分区：
文献类型：
--
作者：
Enriquez, Erik;Lu, Ping;Li, Leigang;Zhang, Bruce;Wang, Haiyan;Jia, Quanxi;Chen, Aiping
多铁性材料由于其作为功能器件材料的潜力而引起了人们极大的兴趣。纳米复合材料已越来越多地用于通过配对不同的铁性材料来设计和产生新的功能，尽管这种组合通常会引入单相对应物中不可预见的新的复杂性和挑战。最近开发的制造3D超纳米复合材料（3D-sNC）的方法为控制和增强功能特性开辟了新的途径。在这项工作中，我们开发了一种新的3D-sNC与CoFe 2 O 4（CFO）短纳米柱阵列嵌入BaTiO 3（BTO）薄膜矩阵通过微结构工程交替沉积BTO：CFO垂直排列的纳米复合层和单相BTO层。这种微结构工程方法允许用绝缘的BTO相封装相对导电的CFO相，这抑制了漏电流并增强了极化。我们的研究结果表明，3D-sNC中的微结构工程提供了一种新的自下而上的方法来制造先进的纳米结构，具有广泛的可能配置，适用于需要系统修改功能特性的应用。
Multiferroic materials have generated great interest due to their potential as functional device materials. Nanocomposites have been increasingly used to design and generate new functionalities by pairing dissimilar ferroic materials, though the combination often introduces new complexity and challenges unforeseeable in single-phase counterparts. The recently developed approaches to fabricate 3D super-nanocomposites (3D‐sNC) open new avenues to control and enhance functional properties. In this work, we develop a new 3D‐sNC with CoFe 2 O 4 (CFO) short nanopillar arrays embedded in BaTiO 3 (BTO) film matrix via microstructure engineering by alternatively depositing BTO: CFO vertically-aligned nanocomposite layers and single-phase BTO layers. This microstructure engineering method allows encapsulating the relative conducting CFO phase by the insulating BTO phase, which suppress the leakage current and enhance the polarization. Our results demonstrate that microstructure engineering in 3D‐sNC offers a new bottom–up method of fabricating advanced nanostructures with a wide range of possible configurations for applications where the functional properties need to be systematically modified.