Coexistence of rhombohedral and orthorhombic phases in ultrathin BiFeO3 films driven by interfacial oxygen octahedral coupling

• Published in: Acta materialia Vol. 145; pp. 220 - 226
• Main Authors: Han, M.J., Wang, Y.J., Ma, D.S., Zhu, Y.L., Tang, Y.L., Liu, Y., Zhang, N.B., Ma, J.Y., Ma, X.L.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.02.2018
• Subjects: BiFeO3; First-principles calculation; Oxygen octahedral coupling; Phase transition; Transmission electron microscopy; BiFeO3; First-principles calculation; Transmission electron microscopy; Oxygen octahedral coupling; Phase transition

Coexistence of two phases creates a morphotropic phase boundary in perovskite oxides, which can provide large piezoelectric response, generating it a well suited system for probe-based memories and actuator applications. The coexistence of two phases in thin films is proposed to be induced by epitax...