Atomic-Scale Visualization of Polarization Pinning and Relaxation at Coherent BiFeO3/LaAlO3 Interfaces (pages 793–799)
Rong Huang, Hang-Chen Ding, Wen-I Liang, Yong-Chao Gao, Xiao-Dong Tang, Qing He, Chun-Gang Duan, Ziqiang Zhu, Junhao Chu, Craig A. J. Fisher, Tsukasa Hirayama, Yuichi Ikuhara and Ying-Hao Chu
Version of Record online: 12 JUL 2013 | DOI: 10.1002/adfm.201301470
Changes in lattice strain and symmetry in BiFeO3 (BFO) crystals at coherent T-BFO/LaAlO3 (LAO) and rhombohedral-BFO/LAO interfaces are imaged with atomic resolution using annular bright-field scanning transmission electron microscopy and first-principles calculations. A common pinned BFO layer and polarization relaxation at the interfaces are identified, providing insight into the ferroelectric behavior of thin films and the complex oxide heterointerfaces between them.