Ferromagnetism in LaFeO_3-LaCrO_3

摘要

Ferromagnetic spin order has been realized in the LaCrO_3-LaFeO_3 superlattices. Fer- romagnetic coupling between Fe~3+ and Cr~3+ through oxygen has long been expected on the basis of Anderson, Goodenough, and Kanamori rules. Despite many studies of Fe-O-Cr-based compounds, random positioning of Fe~3+ and Cr~3+ ions has frustrated The observation of ferromagnetic properties. By creating artificial superlattices of Fe~3+ And Cr~3+ layer along the [111] direction, ferromagnetic ordering has been achieved.