Influence of orientation and ferroelectric domains on the photochemical reactivity of La2Ti2O7

Zhang, Mingyi; Salvador, Paul A.; Rohrer, Gregory S.

doi:10.1016/j.jeurceramsoc.2020.09.020

Cited by 2 publications

(2 citation statements)

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“…A bright contrast can be observed from the amplitude PFM image (Figure 5B), evidencing a significant mechanical amplitude deformation due to the converse piezoelectric effect 47 . On the other hand, several regions with different contrasts can be seen on the corresponding phase PFM image in Figure 5C, revealing ferroelectric domains randomly distributed in the sample with irregular‐shaped domain structures 48 . Bright and dark contrasts are related to the out‐of‐plane (OP) component of the polarization pointing upwards or downwards, respectively 49 .…”

Section: Resultsmentioning

confidence: 94%

“…47 On the other hand, several regions with different contrasts can be seen on the corresponding phase PFM image in Figure 5C, revealing ferroelectric domains randomly distributed in the sample with irregular-shaped domain structures. 48 Bright and dark contrasts are related to the out-of-plane (OP) component of the polarization pointing upwards or downwards, respectively. 49 These results are in full agreement with the eight possible orientations of the ferroelectric polarization vector within a rhombohedral cell.…”

Section: Resultsmentioning

confidence: 99%

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Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy

Ferri,

Da Costa,

Bauwens

et al. 2023

J Am Ceram Soc.

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Abstract(Pb0.96La0.04)(Zr0.95Ti0.05)0.99O3 ceramics were successfully elaborated by the solid‐sate reaction method. The pure perovskite phase was obtained, comprising both rhombohedral (R3c) and orthorhombic (Pbam) crystallographic structures, as determined by x‐ray diffraction and Raman spectroscopy analyses. The rhombohedral and orthorhombic structures were carefully attributed to the ferroelectric (FE) and antiferroelectric (AFE) phases, respectively. The room temperature electromechanical performances of the samples were particularly investigated at the nanoscale level by using piezoresponse force microscopy (PFM). The measurement of PFM domain patterns evidenced spontaneous piezoelectric and ferroelectric activities as well as regions with no piezoresponse, in agreement with the coexistence of FE and AFE phases. By means of the spectroscopic mode of the PFM used in on‐ and off‐field methods, very specific piezoloops were recorded. Square‐shaped hysteresis loops for phase signal and butterfly‐like shape loops for amplitude activity were obtained under and at zero bias when probing ferroelectric regions, while on‐field piezoloops displaying double hysteresis for phase signal were detected and assigned to the stable antiferroelectric phase. Finally, the signature of metastable antiferroelectric phase was also identified through in‐field and remnant loops measurements. These results further provided the phases coexistence, concurrently unveiling intricate nanoscale electrical characteristics (both stable and metastable AFE behaviors) at room temperature. Furthermore, these data suggest that PFM proves to be a robust technique for investigating local antiferroelectricity in such complex ceramic oxides.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy

Ferri,

Da Costa,

Bauwens

et al. 2023

J Am Ceram Soc.

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High-Performance Solution-Processed La₂Ti₂O₇ Sensing Film for a Capacitive Electrolyte–Insulator–Semiconductor pH Sensor

Garu

Bag

Pan

2021

IEEE Electron Device Lett.

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Influence of orientation and ferroelectric domains on the photochemical reactivity of La2Ti2O7

Cited by 2 publications

References 55 publications

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy

High-Performance Solution-Processed La₂Ti₂O₇ Sensing Film for a Capacitive Electrolyte–Insulator–Semiconductor pH Sensor

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Influence of orientation and ferroelectric domains on the photochemical reactivity of La2Ti2O7

Cited by 2 publications

References 55 publications

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb0.96La0.04)(Zr0.95Ti0.05)0.99O3 ceramic system by probing nanoscale analyses via piezoresponse force microscopy

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb0.96La0.04)(Zr0.95Ti0.05)0.99O3 ceramic system by probing nanoscale analyses via piezoresponse force microscopy

High-Performance Solution-Processed La₂Ti₂O₇ Sensing Film for a Capacitive Electrolyte–Insulator–Semiconductor pH Sensor

Contact Info

Product

Resources

About

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy

Evidences of the ferroelectric and antiferroelectric phases coexistence in the (Pb_0.96La_0.04)(Zr_0.95Ti_0.05)_0.99O₃ ceramic system by probing nanoscale analyses via piezoresponse force microscopy