Coexistence of toroidal and polar domains in ferroelectric systems: A strategy for switching ferroelectric vortex

2014 ◽  
Vol 115 (21) ◽  
pp. 214106 ◽  
Author(s):  
W. J. Chen ◽  
Yue Zheng ◽  
Biao Wang ◽  
J. Y. Liu
Keyword(s):  
Ferroelectric Vortex

Phase-field simulations of surface charge-induced ferroelectric vortex

2021 ◽  
Author(s):  
Di Liu ◽  
Xiaoming Shi ◽  
Jing Wang ◽  
Xingwang Cheng ◽  
Houbing Huang
Keyword(s):  
Surface Charge ◽  
Phase Field ◽  
Ferroelectric Vortex

scholarly journals Subunit cell–level measurement of polarization in an individual polar vortex

2019 ◽  
Vol 5 (11) ◽  
pp. eaav4355 ◽  
Author(s):  
Yuanwei Sun ◽  
Adeel Y. Abid ◽  
Congbing Tan ◽  
Chuanlai Ren ◽  
Mingqiang Li ◽  
...  
Keyword(s):  
Dipole Moments ◽  
Polar Vortex ◽  
Scanning Transmission Electron Microscope ◽  
Contrast Imaging ◽  
Cell Level ◽  
Polarization Distribution ◽  
Scanning Transmission ◽  
Out Of Plane ◽  
Sound Foundation ◽  
Ferroelectric Vortex

Recently, several captivating topological structures of electric dipole moments (e.g., vortex, flux closure) have been reported in ferroelectrics with reduced size/dimensions. However, accurate polarization distribution of these topological ferroelectric structures has never been experimentally obtained. We precisely measure the polarization distribution of an individual ferroelectric vortex in PbTiO3/SrTiO3 superlattices at the subunit cell level by using the atomically resolved integrated differential phase contrast imaging in an aberration-corrected scanning transmission electron microscope. We find, in vortices, that out-of-plane polarization is larger than in-plane polarization, and that downward polarization is larger than upward polarization. The polarization magnitude is closely related to tetragonality. Moreover, the contribution of the Pb─O bond to total polarization is highly inhomogeneous in vortices. Our precise measurement at the subunit cell scale provides a sound foundation for mechanistic understanding of the structure and properties of a ferroelectric vortex and lattice-charge coupling phenomena in these topological ferroelectric structures.

scholarly journals Rewritable ferroelectric vortex pairs in BiFeO3

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Yang Li ◽  
Yaming Jin ◽  
Xiaomei Lu ◽  
Jan-Chi Yang ◽  
Ying-Hao Chu ◽  
...  
Keyword(s):  
Vortex Pairs ◽  
Ferroelectric Vortex

Switching the chirality of a ferroelectric vortex in designed nanostructures by a homogeneous electric field

2017 ◽  
Vol 96 (13) ◽  
Author(s):  
Le Van Lich ◽  
Takahiro Shimada ◽  
Jie Wang ◽  
Van-Hai Dinh ◽  
Tinh Quoc Bui ◽  
...  
Keyword(s):  
Electric Field ◽  
Homogeneous Electric Field ◽  
Ferroelectric Vortex

Manipulation of ferroelectric vortex domains in hexagonal manganites

2011 ◽  
Vol 110 (5) ◽  
pp. 052007 ◽  
Author(s):  
M. Lilienblum ◽  
E. Soergel ◽  
M. Fiebig
Keyword(s):  
Hexagonal Manganites ◽  
Ferroelectric Vortex

scholarly journals Preparation of epitaxial hexagonal YMnO3 thin films and observation of ferroelectric vortex domains

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Hongzhuang Pang ◽  
Fengyuan Zhang ◽  
Min Zeng ◽  
Xingsen Gao ◽  
Minghui Qin ◽  
...  
Keyword(s):  
Thin Films ◽  
Ferroelectric Vortex

scholarly journals Coexistence of ferroelectric vortex domains and charged domain walls in epitaxial BiFeO3 film on (110)O GdScO3 substrate

2012 ◽  
Vol 111 (10) ◽  
pp. 104117 ◽  
Author(s):  
Yajun Qi ◽  
Zuhuang Chen ◽  
Chuanwei Huang ◽  
Lihua Wang ◽  
Xiaodong Han ◽  
...  
Keyword(s):  
Domain Walls ◽  
Bifeo3 Film ◽  
Ferroelectric Vortex

scholarly journals Enhanced electric conductivity at ferroelectric vortex cores in BiFeO3

2011 ◽  
Vol 8 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Nina Balke ◽  
Benjamin Winchester ◽  
Wei Ren ◽  
Ying Hao Chu ◽  
Anna N. Morozovska ◽  
...  
Keyword(s):  
Electric Conductivity ◽  
Ferroelectric Vortex

Organic Ferroelectric Vortex–Antivortex Domain Structure

2020 ◽  
Vol 142 (52) ◽  
pp. 21932-21937
Author(s):  
Yuan-Yuan Tang ◽  
Yongfa Xie ◽  
Yong Ai ◽  
Wei-Qiang Liao ◽  
Peng-Fei Li ◽  
...  
Keyword(s):  
Domain Structure ◽  
Ferroelectric Vortex

scholarly journals Path-dependent Vortex Switching in Ferroelectric Nanoplate Junctions Toward a Memory Device Concept

2022 ◽  
Vol 9 ◽  
Author(s):  
Weiming Xiong ◽  
Weijin Chen ◽  
Yue Zheng
Keyword(s):  
Strong Coupling ◽  
Memory Device ◽  
Switching Behavior ◽  
Continuous Systems ◽  
Memory Devices ◽  
Promising Candidate ◽  
Thermal Fields ◽  
Crucial Problem ◽  
Path Dependent ◽  
Ferroelectric Vortex

Ferroelectric vortex has attracted much attention as a promising candidate for memories with high density and high stability. It is a crucial problem to precisely manipulate the vortex chirality in order to utilize it to store information. Nevertheless, so far, a practical and direct strategy for vortex switching is still lacking. Moreover, the strong coupling of chirality between neighboring vortices in continuous systems like superlattices limits the application of ferroelectric-vortex-based memories. Here, we design a ferroelectric nanoplate junction to break the strong coupling between neighboring vortices. Phase-field simulation results demonstrate that the vortex chirality of the nanoplates could be efficiently tuned by sweeping local electric and thermal fields in the nanoplate junction. More importantly, the weak coupling between two neighboring nanoplates through the intermediate junction brings a deterministic vortex switching behavior. Based on this, we propose a concept of vortex memory devices. Our study provides an effective way to control the vortex chirality and suggests an opportunity for designing new memory devices based on ferroelectric vortex.

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