Self-Assembled Growth of BiFeO3–CoFe2O4 Nanostructures


  • This work is supported by ONR MURI under contract No. E-21-6RU-G4 and LBNL-LDRD. The authors acknowledge the support of the National Center for Electron Microscopy, Lawrence Berkeley Lab, which is supported by the U.S. Department of Energy under Contract # DE-AC02–05CH11231.


original image

3D heteroepitaxial growth of BiFeO3-CoFe2O4 nanostructures leads to unique morphological patterns depending on the substrate orientations. The morphologies of the BiFeO3-CoFe2O4 nanostructures, estimated using the Winterbottom construction (see figure), are dependent on the different nucleation modes that result from the differences in surface energy anisotropy. The dimensions of the BiFeO3-CoFe2O4 nanostructures increase as the growth temperature increases and decrease as the growth rate increases.