随着现代信息技术的不断发展,集电、磁于一身的多铁复合薄膜材料因其独特的物理特性已在换能器、传感器、存储器等领域应用广泛。然而,尽管多铁复合薄膜克服了陶瓷因高温烧结造成磁电耦合系数较小的缺点,但多铁复合薄膜中的铁电相也存在韧性差、脆性大,从而限制其在柔性器件中的应用。通过将铁磁相与具有柔性的铁电相复合而成的柔性多铁复合薄膜理论上可获得强的磁电耦合性能,同时因其具有优异的柔韧性和延展性,有望应用于便携式可穿戴设备、医疗设备、磁电传感器设备等领域。但是,柔性多铁复合薄膜的磁电耦合效应与磁电相的性能、组成、两相的接触面积以及两相间的复合形式等因素有关,其中,复合形式是影响耦合系数的关键因素。因此,综述了国内外复合形式影响柔性多铁复合薄膜磁电耦合效应的研究进展,并提出了一些亟待解决的问题。
With the continuous development of modern information technology,multiferroic composite thin film materials that integrate electricity and magnetism have a wide range of application prospects in transducers,sensors,memories and other fields because of their unique physical properties.However,although the multiferroic composite film overcomes the shortcomings of the ceramic due to the small magnetoelectric coupling coefficient caused by high-temperature sintering,the ferroelectric phase in the multiferroic composite film also has poor toughness and large brittleness,thereby limiting its application in flexible devices.By combining the flexible ferroelectric phase with the ferromagnetic phase to form a flexible multiferroic composite film,it is theoretically possible to obtain strong magnetoelectric coupling performance,which is expected to be applied to portable wearable devices,medical equipment,magnetoelectric sensor devices and other fields due to its excellent flexibility and ductility.However,the magnetoelectric coupling effect of the flexible multiferroic composite film is related to the performance of the magnetic and electrical phases,composition,the contact area of the two phases and the compound form between the two phases,among which the compound form is the key factor affecting the coupling coefficient.Therefore,the research progress of the influence of compound forms on the magnetoelectric coupling effect of flexible multiferroic composite films at home and abroad was reviewed in this paper,and some problems that needed to be solved urgently were also put forward.
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基金资助
重庆市高校创新研究群体项目(CXQT19031);重庆市留创计划创新类项目(cx2019159);重庆市自然科学基金项目(cstc2020jcyj-msxmX0030);重庆科技学院研究生创新计划项目(YKJCX2120531);重庆市教委科学技术项目(KJQN201801509);重庆市基础与前沿探索项目(cstc2019jcyj-msxmX0071);重庆市自然科学基金重点项目(cstc2020jcyj-zdxmX0008);重庆市教委科学技术研究重大项目(KJZD-M201901501);重庆市科技创新领军人才计划(CSTCCXLJRC201919);重庆市技术创新与应用发展专项(cstc2020jscx-msxmX0218);重庆市教委科学技术青年项目(KJQN202001528);重庆科技学院研究基金项目(Ckrc2019020)
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