Nanoscale ferroelectric switching behavior at charged domain boundaries studied by angle-resolved piezoresponse force microscopy

2011 ◽  
Vol 99 (14) ◽  
pp. 142909 ◽  
Author(s):  
Moonkyu Park ◽  
Seungbum Hong ◽  
Jiyoon Kim ◽  
Jongin Hong ◽  
Kwangsoo No
2005 ◽  
Vol 902 ◽  
Author(s):  
Catalin Harnagea ◽  
Cristian Victor Cojocaru ◽  
Alain Pignolet

AbstractWe report here the successful fabrication of BiFeO3 (BFO) isolated micron-sized structures by pulsed laser deposition. The islands have a relatively constant aspect ratio (height/lateral size) of 0.1-0.3. We present their local ferroelectric characterization, using piezoresponse force microscopy (PFM), showing that the micron-sized BFO islands exhibit a strong piezoresponse and have ferroelectric domains with lateral sizes down to the 100 nm range. We also present here the first results of Magnetostriction Force Microscopy experiments performed on these structures. On ferromagnetic samples this method reveals a piezomagnetic or magnetostriction contrast, associated with magnetic domains. In our case, we show that the contrast can be associated to the magnetoelectric effect.


2010 ◽  
Vol 97 (10) ◽  
pp. 102902 ◽  
Author(s):  
Florian Johann ◽  
Tobias Jungk ◽  
Martin Lilienblum ◽  
Ákos Hoffmann ◽  
Elisabeth Soergel

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 190 ◽  
Author(s):  
Shenglan Wu ◽  
Jing Zhang ◽  
Xiaoyan Liu ◽  
Siyi Lv ◽  
Rongli Gao ◽  
...  

Ferroelectric nanowires have attracted great attention due to their excellent physical properties. We report the domain structure, ferroelectric, piezoelectric, and conductive properties of bismuth ferrite (BFO, short for BiFeO3) nanowires characterized by scanning probe microscopy (SPM). The X-ray diffraction (XRD) pattern presents single phase BFO without other obvious impurities. The piezoresponse force microscopy (PFM) results indicate that the nanowires possess a multidomain configuration, and the maximum piezoelectric coefficient (d33) of single BFO nanowire is 22.21 pm/V. Poling experiments and local switching spectroscopy piezoresponse force microscopy (SS-PFM) demonstrate that there is sufficient polarization switching behavior and obvious piezoelectric properties in BFO nanowires. The conducting atomic force microscopy (C-AFM) results show that the current is just hundreds of pA at 8 V. These lay the foundation for the application of BFO nanowires in nanodevices.


2010 ◽  
Vol 1256 ◽  
Author(s):  
Igor Bdikin ◽  
Maxim Silibin ◽  
Rachid Ayouchi ◽  
R Schwarz ◽  
Sergei Gavrilov ◽  
...  

AbstractHigh-resolution piezoresponse force microscopy (PFM) was used to measure the out-of-plane (effective longtitudinal) and in-plane (effective shear) piezoresponse of zinc oxide films and microrods. Thin films were deposited by pulsed laser deposition (PLD) and micro rods formed from solution. Measurements of three components of piezoresponse, one out-of-plane (OPP) and two in-plane (IPP) signals, allowed the construction of 3D piezoelectric maps reflecting the polycrystalline nature of the films. Both the IPP and OPP piezoresponse signal distributions are analyzed based on the particular texture of the films. It was observed that the central part of microrods contains polarization inversion with head-to-head ferroelectric-like domains. The as-grown domain boundaries were always parallel to the (0001) basal plane. Analysis of the PFM piezoresponse images was done based on the hexagonal structure of ZnO and topographic features along the hexagonal axis.


2019 ◽  
Vol 5 (3) ◽  
pp. 48
Author(s):  
Maxim Silibin ◽  
Dmitry Karpinsky ◽  
Vladimir Bystrov ◽  
Dzmitry Zhaludkevich ◽  
Marina Bazarova ◽  
...  

The unprecedented attributes such as biocompatibility and flexibility of macromolecular piezoelectric polymer has triggered an immense interested in scientific society for their potential exploitation in implantable electronic devices. In the present article, a theoretical and experimental investigation is done to explore the polarization behavior of composite fibers based on copolymer poly-trifluoroethylene P(VDF-TrFE) and graphene oxide (GO) with varying composition of the components is explored for its possible application in bioelectronic devices. Electromechanical properties of the PVDF/GO nanofibers were investigated using piezoresponse force microscopy (PFM) method. The switching behavior, charge states, and piezoelectric response of the fibers were found to depend on the concentration of GO up to 20%. Theoretical models of PVDF chains, interacting with Graphene/GO layers has been used to explore the evolution of piezoresponse in the composite fibers. In order to compute piezoelectric coefficients, the behavior of composite in electrical fields has been modeled using software HyperChem. The experimental results are qualitatively correlated with a computed theoretical model.


2015 ◽  
Vol 34 ◽  
pp. 67-72
Author(s):  
Madhuparna Pal ◽  
Ming Liu ◽  
Chun Rui Ma ◽  
Chong Lin Chen ◽  
R. Guo ◽  
...  

Ferroelectric-relaxor behavior on highly epitaxial Barium Zirconium Titanate (Ba (Zr0.2Ti0.8)O3) thin film was investigated using the Piezoresponse Force Microscopy specifically to investigate the onset of relaxor behavior. The surface roughness, microstructure and the grain size of the film were systematically studied. Ferroelectric switching at random localized points were observed at room temperature though it has been previously reported that the phase transition in BZT-20 occurs at 285K. Phase reversal with the reversal of the applied voltage was also seen. Scanning Capacitance Microscope has been employed to interrogate the localized change in the capacitance with change in voltage. The thin film sample showed the presence of ferroelectric nanoregions at room temperature unlike its bulk counterparts which is paraelectric at room temperature.


2003 ◽  
Vol 785 ◽  
Author(s):  
I. K. Bdikin ◽  
V. V. Shvartsman ◽  
A. L. Kholkin

ABSTRACTHigh-resolution domain studies were performed in Pb(Zn1/3Nb2/3)O3-4.5%PbTiO3 (PZN-PT) single crystals via piezoresponse force microscopy (PFM). Irregular domain patterns with the typical sizes of 20–100 nm were observed on the (001)-oriented surfaces of unpoled samples. On the contrary, (111) crystal cuts exhibited normal micron-sized regular domains with the domain boundaries directed along allowed crystallographic planes. The existence of nanodomains in (100)-oriented crystals was tentatively attributed to the relaxor nature of PZN-PT where small polar clusters were predicted to exist upon zero-field cooling. These nanodomains were considered as the nuclei of the opposite polarization state that ease the switching process for this particular crystal cut. Local piezoelectric hysteresis was also performed by PFM on the nanometer scale. Similar switching behavior of (111)- and (100)-oriented PZN-PT crystals suggests that their superior piezoelectric properties can be related to the domain wall motion rather than to the perovskite lattice itself.


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