Please use this identifier to cite or link to this item:
|Title:||Uniaxial strain-induced ferroelectric phase with a giant axial ratio in a (110) BiFeO3 thin film|
|Citation:||Liu, H., Yang, P., Fan, Z., Kumar, A., Yao, K., Ong, K.P., Zeng, K., Wang, J. (2013-06-06). Uniaxial strain-induced ferroelectric phase with a giant axial ratio in a (110) BiFeO3 thin film. Physical Review B - Condensed Matter and Materials Physics 87 (22) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.87.220101|
|Abstract:||Strain engineering, which employs biaxial misfit strain to deform the crystal structure, is a powerful tool to tune the physical behavior of epitaxial thin films. Here we show that a 10-nm-thick BiFeO3 film is uniaxially strained by (110)-oriented LaAlO3 substrate, which exhibits a monoclinic lattice with a giant c/a ∼ 1.24 and a unique stripe ferroelectric domain configuration, as revealed by high resolution synchrotron x-ray diffraction and piezoelectric force microscopy. A strain-phase diagram for BiFeO3 under uniaxial strain condition is predicted by first-principles calculations, suggesting that monoclinic Pm phase with a large polarization of ∼130 μC/cm2 is the lowest-in-energy phase when strained by (110)-oriented LaAlO3 substrate. Our results provide a potential route to tune physical behavior of epitaxial ferroelectric thin films by uniaxial strain in (110) orientation, instead of widely investigated biaxial strain in (001) orientation. © 2013 American Physical Society.|
|Source Title:||Physical Review B - Condensed Matter and Materials Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 13, 2018
WEB OF SCIENCETM
checked on Nov 27, 2018
checked on Dec 15, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.