Singh D J, Park Chul Hong
Materials Science and Technology Division, Oak Ridge, Tennessee 37831-6114, USA.
Phys Rev Lett. 2008 Feb 29;100(8):087601. doi: 10.1103/PhysRevLett.100.087601. Epub 2008 Feb 27.
We elucidate a mechanism for obtaining polar behavior in magnetic perovskites based on A-site disorder and demonstrate this mechanism by density functional calculations for the double perovskite (La,Lu)MnNiO6 with Lu concentrations at and below 50%. We show that this material combines polar behavior and ferromagnetism. The mechanism is quite general and may be applicable to a wide range of magnetic perovskites.
我们阐明了一种基于A位无序在磁性钙钛矿中获得极性行为的机制，并通过对Lu浓度为50%及以下的双钙钛矿(La,Lu)MnNiO6进行密度泛函计算来证明这一机制。我们表明，这种材料兼具极性行为和铁磁性。该机制具有相当的普遍性，可能适用于多种磁性钙钛矿。
