Bismuth ferrite (BiFeO₃) is the most widely studied multiferroic material with robust ferroelectricity and antiferromagnetic ordering at room temperature. One of the possible device applications of this material is one that utilizes the ferroelectric/piezoelectric property itself such as ferroelectric memory components, actuators, and so on. Other applications are more challenging and make full use of its multiferroic property to realize novel spintronics and magnetic memory devices, which can be addressed electrically as well as magnetically. This progress report summarizes the recent attempt to control the piezoelectric and magnetic properties of BiFeO₃ by cobalt substitution.

中文翻译：

---

钴替代物开发铋铁氧体作为压电和多铁性材料

铋铁氧体（BiFeO ₃）是研究最广泛的多铁材料，在室温下具有强大的铁电性和反铁磁有序性。这种材料的一种可能的设备应用是利用铁电/压电特性本身的材料，例如铁电存储组件，致动器等。其他应用更具挑战性，并充分利用其多铁性特性来实现新颖的自旋电子学和磁存储器件，这些器件既可以通过电方式也可以通过磁方式进行寻址。该进展报告总结了最近通过钴替代来控制BiFeO ₃的压电和磁性能的尝试。