Ferroelastic domain switching dynamics under electrical and mechanical excitations
作者： Peng Gao , Jason Britson , Christopher T. Nelson , Jacob R. Jokisaari , Chen Duan
DOI: 10.1038/NCOMMS4801
关键词:
摘要: In thin film ferroelectric devices, switching of ferroelastic domains can significantly enhance electromechanical response. Previous studies have shown disagreement regarding the mobility or immobility domain walls, indicating that behaviour strongly depends on specific microstructures in systems. Here we study dynamics individual Pb(Zr0.2,Ti0.8)O3 films under electrical and mechanical excitations by using situ transmission electron microscopy phase-field modelling. We find be effectively permanently stabilized dislocations at substrate interface while similar free surfaces without pinning removed either electric stress fields. For both switching, is found to occur most readily highly active needle points domains. Our results provide new insights into understanding polarization as well engineering devices.
nature.com
harvard.edu
elsevier.com
sci-hub.se 参考文章(42)
V. M. Aleksandrov, D. A. Pozharskiĭ, Three-dimensional contact problems ,(2001)
Wei Li, Marin Alexe, Investigation on switching kinetics in epitaxial Pb(Zr0.2Ti0.8)O3 ferroelectric thin films: Role of the 90° domain walls Applied Physics Letters. ,vol. 91, pp. 262903- ,(2007) , 10.1063/1.2825414
Markus Kohli, Paul Muralt, Nava Setter, Removal of 90° domain pinning in (100) Pb(Zr0.15Ti0.85)O3 thin films by pulsed operation Applied Physics Letters. ,vol. 72, pp. 3217- 3219 ,(1998) , 10.1063/1.121554
C. S. Ganpule, V. Nagarajan, S. B. Ogale, A. L. Roytburd, E. D. Williams, R. Ramesh, Domain nucleation and relaxation kinetics in ferroelectric thin films Applied Physics Letters. ,vol. 77, pp. 3275- 3277 ,(2000) , 10.1063/1.1322051
S Choudhury, JX Zhang, YL Li, LQ Chen, QX Jia, SV Kalinin, None, Effect of ferroelastic twin walls on local polarization switching: Phase-field modeling Applied Physics Letters. ,vol. 93, pp. 162901- ,(2008) , 10.1063/1.2993330
Y Gaillard, A Hurtado Macías, J Muñoz-Saldaña, M Anglada, G Trápaga, Nanoindentation of BaTiO3: dislocation nucleation and mechanical twinning Journal of Physics D: Applied Physics. ,vol. 42, pp. 085502- ,(2009) , 10.1088/0022-3727/42/8/085502
Yukio Sato, Tsukasa Hirayama, Yuichi Ikuhara, Real-Time Direct Observations of Polarization Reversal in a Piezoelectric Crystal: Pb ( Mg 1 / 3 Nb 2 / 3 ) O 3 − PbTiO 3 Studied via In Situ Electrical Biasing Transmission Electron Microscopy Physical Review Letters. ,vol. 107, pp. 187601- ,(2011) , 10.1103/PHYSREVLETT.107.187601
M.J. Hÿtch, E. Snoeck, R. Kilaas, Quantitative measurement of displacement and strain fields from HREM micrographs Ultramicroscopy. ,vol. 74, pp. 131- 146 ,(1998) , 10.1016/S0304-3991(98)00035-7
A. Roelofs, N. A. Pertsev, R. Waser, F. Schlaphof, L. M. Eng, C. Ganpule, V. Nagarajan, R. Ramesh, Depolarizing-field-mediated 180° switching in ferroelectric thin films with 90° domains Applied Physics Letters. ,vol. 80, pp. 1424- 1426 ,(2002) , 10.1063/1.1448653
Y. Ehara, S. Yasui, J. Nagata, D. Kan, V. Anbusathaiah, T. Yamada, O. Sakata, H. Funakubo, V. Nagarajan, Ultrafast switching of ferroelastic nanodomains in bilayered ferroelectric thin films Applied Physics Letters. ,vol. 99, pp. 182906- ,(2011) , 10.1063/1.3657468