Zhou Ziyao, Zhao Shishun, Gao Yuan, Wang Xinjun, Nan Tianxiang, Sun Nian X, Yang Xi, Liu Ming
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education &International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China.
Electrical and Computer Engineering Department, Northeastern University, Boston, MA 02115, USA.
Sci Rep. 2016 Feb 5;6:20450. doi: 10.1038/srep20450.
Magnetoelectric coupling effect has provided a power efficient approach in controlling the magnetic properties of ferromagnetic materials. However, one remaining issue of ferromagnetic/ferroelectric magnetoelectric bilayer composite is that the induced effective anisotropy disappears with the removal of the electric field. The introducing of the shape memory alloys may prevent such problem by taking the advantage of its shape memory effect. Additionally, the shape memory alloy can also "store" the magnetoelectric coupling before heat release, which introduces more functionality to the system. In this paper, we study a FeGaB/NiTi/PMN-PT multiferroic heterostructure, which can be operating in different states with electric field and temperature manipulation. Such phenomenon is promising for tunable multiferroic devices with multi-functionalities.
磁电耦合效应为控制铁磁材料的磁性提供了一种高效节能的方法。然而，铁磁/铁电磁电双层复合材料仍然存在一个问题，即去除电场后，诱导产生的有效各向异性会消失。引入形状记忆合金可能会利用其形状记忆效应来解决此类问题。此外，形状记忆合金还可以在热释放之前“存储”磁电耦合，这为系统引入了更多功能。在本文中，我们研究了一种FeGaB/NiTi/PMN-PT多铁性异质结构，它可以通过电场和温度调控在不同状态下工作。这种现象对于具有多功能的可调谐多铁性器件来说很有前景。
