Microscopic mechanism of electric field-induced domain switching in manganese oxides

过渡金属氧化物，如锰氧化物和铁氧化物，在冷却时经历电荷/轨道有序化，这是一种结构相变。研究人员感兴趣的是利用电场、磁场和压力来控制由于电荷/轨道有序化(即电荷/轨道域)而产生的微结构。我们试图用先进的电子显微镜技术来揭示外场诱导磁畴转换的机制。

Transition metal oxides, such as manganese oxides and iron oxides, undergo charge/orbital ordering upon cooling, which is type of structural phase transformations. Researchers are interested in controlling the microstructure due to charge/orbital ordering (i.e., charge/orbital domains) by using electric field, magnetic field, and pressure. We attempted to reveal the mechanism underlying the external field-induced domain switching by using advanced techniques of transmission electron microscopy.