TY - JOUR
T1 - Mechanical-force-induced non-local collective ferroelastic switching in epitaxial lead-titanate thin films
AU - Lu, Xiaoyan
AU - Chen, Zuhuang
AU - Cao, Ye
AU - Tang, Yunlong
AU - Xu, Ruijuan
AU - Saremi, Sahar
AU - Zhang, Zhan
AU - You, Lu
AU - Dong, Yongqi
AU - Das, Sujit
AU - Zhang, Hangbo
AU - Zheng, Limei
AU - Wu, Huaping
AU - Lv, Weiming
AU - Xie, Guoqiang
AU - Liu, Xingjun
AU - Li, Jiangyu
AU - Chen, Lang
AU - Chen, Long Qing
AU - Cao, Wenwu
AU - Martin, Lane W.
N1 - Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Ferroelastic switching in ferroelectric/multiferroic oxides plays a crucial role in determining their dielectric, piezoelectric, and magnetoelectric properties. In thin films of these materials, however, substrate clamping is generally thought to limit the electric-field- or mechanical-force-driven responses to the local scale. Here, we report mechanical-force-induced large-area, non-local, collective ferroelastic domain switching in PbTiO3 epitaxial thin films by tuning the misfit-strain to be near a phase boundary wherein c/a and a1/a2 nanodomains coexist. Phenomenological models suggest that the collective, c-a-c-a ferroelastic switching arises from the small potential barrier between the degenerate domain structures, and the large anisotropy of a and c domains, which collectively generates much larger response and large-area domain propagation. Large-area, non-local response under small stimuli, unlike traditional local response to external field, provides an opportunity of unique response to local stimuli, which has potential for use in high-sensitivity pressure sensors and switches.
AB - Ferroelastic switching in ferroelectric/multiferroic oxides plays a crucial role in determining their dielectric, piezoelectric, and magnetoelectric properties. In thin films of these materials, however, substrate clamping is generally thought to limit the electric-field- or mechanical-force-driven responses to the local scale. Here, we report mechanical-force-induced large-area, non-local, collective ferroelastic domain switching in PbTiO3 epitaxial thin films by tuning the misfit-strain to be near a phase boundary wherein c/a and a1/a2 nanodomains coexist. Phenomenological models suggest that the collective, c-a-c-a ferroelastic switching arises from the small potential barrier between the degenerate domain structures, and the large anisotropy of a and c domains, which collectively generates much larger response and large-area domain propagation. Large-area, non-local response under small stimuli, unlike traditional local response to external field, provides an opportunity of unique response to local stimuli, which has potential for use in high-sensitivity pressure sensors and switches.
UR - https://www.scopus.com/pages/publications/85071770504
U2 - 10.1038/s41467-019-11825-2
DO - 10.1038/s41467-019-11825-2
M3 - 文章
C2 - 31477695
AN - SCOPUS:85071770504
SN - 2041-1723
VL - 10
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 3951
ER -