Science Daily May 2, 2019
Bismuth ferrite (BiFeO3) has the potential to store information much more efficiently than is currently possible. However, its magnetoelectric response is small. Researchers at the University of Arkansas simulated conditions that enhance the magnetoelectric response to the point that it could be used to more efficiently store information by using electricity, rather than magnetism. They found additional oscillations consisting of a mixing between acoustic phonons, optical phonons, and magnons, and reflect the existence of a new quasiparticle that can be coined an “electroacoustic magnon.” The finding could help tune the samples to the magnetostrictive-induced mechanical resonance frequency, in order to achieve large dynamical magnetoelectric couplings…read more. TECHNICAL ARTICLE