Observation of nanotwinning and room temperature ferromagnetism in sub-5 nm BiFeO nanoparticles: a combined experimental and theoretical study.

Particle size significantly affects the properties and therefore the potential applications of multiferroics. However, is there special particle size effect in BiFeO, which has a spiral modulated spin structure? This is still under investigation for sub-5 nm BiFeO. In this report, the structural, electronic and magnetic properties are investigated for chemically synthesized BiFeO nanoparticles with an average size of 3 nm.