Researchers of the NanoBioMedical center at Adam Mickiewicz University in Poznan- Poland, in collaboration with the University of Barcelona in Spain, have recently reported on the room temperature multiferroic behavior of Bismuth Iron Manganite (Bi(Fe0.5Mn0.5)O3) thin films, with a thickness below 40nm.
Multiferroic materials are promising for electronics due to the possibility of affecting their magnetic properties by electric means. In their article the team has not only shown the interdependence of both magnetic and electric properties at room temperature but has also shown the exceptional low magnetic damping of this material, making it one of the only known ferromagnetic and ferroelectric multiferroic with low damping.
Low magnetic damping (also known as Gilbert damping) is a property that lies at the core of future Spintronic applications, for example, spin-transfer torque in MRAM memories. Low values of this damping typically mean much longer lifetime of spin waves propagating in a magnetic material. Thus, when taking into account, the multiferroic behavior and low magnetic damping of this material, researchers are optimistic their results can open new ways for spintronic applications, especially those in which the high magnetoelectric coupling and low damping cooperate for faster, denser, and more energetically efficient technology.