scholarly journals Lateral piezoelectric response across ferroelectric domain walls in thin films

2010 ◽  
Vol 108 (4) ◽  
pp. 042002 ◽  
Author(s):  
J. Guyonnet ◽  
H. Béa ◽  
P. Paruch
Keyword(s):  
Thin Films ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Piezoelectric Response

Complex structural-ferroelectric domain walls in thin films of hexagonal orthoferrites RFeO3 (R = Lu, Er)

2013 ◽  
Vol 103 (11) ◽  
pp. 112907 ◽  
Author(s):  
Vladimir V. Roddatis ◽  
Andrew R. Akbashev ◽  
Sergei Lopatin ◽  
Andrey R. Kaul
Keyword(s):  
Thin Films ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Complex Structural

scholarly journals Controlled manipulation of conductive ferroelectric domain walls and nanoscale domains in BiFeO3 thin films

2021 ◽  
Author(s):  
Dongfeng Zheng ◽  
Guo Tian ◽  
Yadong Wang ◽  
Wenda Yang ◽  
Luyong Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Bifeo3 Thin Films

scholarly journals Effect of ferroelectric domain walls on the dielectric properties of PbZrO3 thin films

2020 ◽  
Vol 117 (14) ◽  
pp. 142905 ◽  
Author(s):  
Mamadou D. Coulibaly ◽  
Caroline Borderon ◽  
Raphaël Renoud ◽  
Hartmut W. Gundel
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Domain Walls ◽  
Ferroelectric Domain

The Impact of Domains on the Dielectric and Electromechanical Properties of Ferroelectric Thin Films

1997 ◽  
Vol 493 ◽  
Author(s):  
S. Trolier-McKinstry ◽  
P. Aungkavattana ◽  
F. Chu ◽  
J. Lacey ◽  
J-P. Maria ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Domain Walls ◽  
Sol Gel ◽  
Ferroelectric Thin Films ◽  
Piezoelectric Response ◽  
Electromechanical Properties ◽  
Phase Switching ◽  
Pzt Films ◽  
The Impact

ABSTRACTIn ferroelectric thin films for capacitive and piezoelectric applications, it is important to understand which mechanisms contribute to the observed dielectric constant and piezoelectricity. In soft PZT (PbZr1−xTixO3) ceramics, over half the room temperature response is associated with domain wall contributions to the properties. However, recent studies on bulk ceramics have demonstrated that the number of domain variants within grains, and the mobility of the twin walls depend on the grain size. This leads to a degradation in the dielectric and piezoelectric properties for grain sizes below a micron. This has significant consequences for thin films since a lateral grain size of 1 μm is often the upper limit on the observed grain size. In addition, since the pertinent domain walls are ferroelastic, the stress imposed on the film by the substrate could also clamp the piezoelectric response. To investigate these factors, controlled stress levels were imposed on PZT films of different thickness while the dielectric and electromechanical properties were measured. It was found that for undoped sol-gel PZT 40/60, 52/48, and 60/40 thin films under a micron in thickness, the extrinsic contributions to the dielectric and electromechanical properties make very modest contributions to the film response. No significant enhancement in the properties was observed even when the film was brought through the zero global stress condition. Comparable results were obtained from laser ablated films grown from hard and soft PZT targets. Finally, little twin wall mobility was observed in AFM experiments. The consequences of this in terms of the achievable properties in PZT films will be presented. Work on circumventing these limitations via utilization of antiferroelectric phase switching films and relaxor ferroelectric single crystal films will also be discussed.

Electron Holographic Characterization of Ferroelectric Thin Films

1992 ◽  
Vol 284 ◽  
Author(s):  
Xiao Zhang ◽  
David C. Joy
Keyword(s):  
Thin Films ◽  
Domain Wall ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Electron Holography ◽  
Contrast Imaging ◽  
Thin Specimen ◽  
Wall Width ◽  
Domain Wall Width

ABSTRACTIn this paper we will present recent experimental results, using electron holography and electron interferometry, of studies of ferroelectric domain walls in BaTiO3 thin films. Unlike conventional TEM diffraction contrast imaging of ferroelectrics, the new technique that we have developed not only allows direct visualization of ferroelectric domain walls and electrostatic field distributions in the vicinity of the domain wall, but also enables quantitative measurement of domain wall width and local polarization. We have measured 90° domain wall width to be between 20 to 50 Å for a BaTiO3 thin specimen. The variation of polarization across the domain wall will be shown to be close to that predicted by the Zhirnov model. The value of the measured spontaneous polarization is about 1.5×10−5 C/cm2, which is closed to the bulk macroscopically measured value.

Imaging of ferroelectric domain walls by electron holography

1992 ◽  
Vol 50 (1) ◽  
pp. 246-247
Author(s):  
Xiao Zhang
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Object Wave ◽  
Electron Holography ◽  
High Resolution Imaging ◽  
Quantitative Measurements ◽  
Resolution Imaging ◽  
Electron Microscopes

Electron holography has recently been available to modern electron microscopy labs with the development of field emission electron microscopes. The unique advantage of recording both amplitude and phase of the object wave makes electron holography a effective tool to study electron optical phase objects. The visibility of the phase shifts of the object wave makes it possible to directly image the distributions of an electric or a magnetic field at high resolution. This work presents preliminary results of first high resolution imaging of ferroelectric domain walls by electron holography in BaTiO3 and quantitative measurements of electrostatic field distribution across domain walls.

Piezoelectric Response and Polarization-Dependent Conductivity of Grain Boundaries in BiFeO3 Thin Films

2019 ◽  
Author(s):  
D.O. Alikin ◽  
Y. Fomichov ◽  
S.P. Reis ◽  
A.S. Abramov ◽  
D.S. Chezganov ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Boundaries ◽  
Piezoelectric Response ◽  
Bifeo3 Thin Films
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