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#7193. An in-situ Raman spectroscopic investigation of PLZT ceramic under a coupled mechanical-electrical load
| January 2027 | publication date |
| Proposal available till | 11-05-2025 |
| 4 total number of authors per manuscript | 0 $ |
| The title of the journal is available only for the authors who have already paid for |
| Journal’s subject area: |
| Mechanics of Materials; Electrical and Electronic Engineering; Materials Chemistry; Condensed Matter Physics; Ceramics and Composites; Electronic, Optical and Magnetic Materials; |
| place 1 | place 2 | place 3 | place 4 |
| Free | Free | Free | Free |
| 2510 $ | 1340 $ | 1170 $ | 1000 $ |
Contract №7193.1   | Contract №7193.2 | Contract №7193.3 | Contract №7193.4 |
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Abstract:
A novel in-situ Raman spectroscopic observation system was established to investigate the microscopic behaviors of lanthanum-doped lead zirconate titanate (PLZT) polycrystalline ceramic under a coupled mechanical-electrical load. The compressive stress ranging from 0 MPa to 548.8 MPa and the constant electric field of 20XX V/mm were simultaneously applied to the as-prepared rectangular PLZT specimen with a typical tetragonal structure and an empirical composition of Pb0.86La0.10Zr0.57Ti0.43O2.86. It was found that the 5-time averaged in-situ Raman spectra obtained within the same grain in the PLZT ceramic by varying the polarization direction from 0° to 180° were susceptible to the coupled mechanical-electrical load. The Raman intensity (I) and the polarization angle (?) may be related by I = Im sin (2? + ?) + k. Under the action of the same intensity of the incident light, the variations in the fitting parameters k, Im, and ? might be referred to the changes in the orientation distributions and material constants of Raman tensors. The polarization direction for the Raman scattering intensity reaching maximum (?max) may be determined by2?max=?2??. The apparent reduction in Raman intensity and slight enhancement in ?max were observed under a coupled mechanical-electrical load.
Keywords:
Coupled load; Domain switching; Ferroelectric ceramics; In-situ Raman; Polarization angle
Contacts :
2 place - free (for sale)
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Abstract:
A novel in-situ Raman spectroscopic observation system was established to investigate the microscopic behaviors of lanthanum-doped lead zirconate titanate (PLZT) polycrystalline ceramic under a coupled mechanical-electrical load. The compressive stress ranging from 0 MPa to 548.8 MPa and the constant electric field of 20XX V/mm were simultaneously applied to the as-prepared rectangular PLZT specimen with a typical tetragonal structure and an empirical composition of Pb0.86La0.10Zr0.57Ti0.43O2.86. It was found that the 5-time averaged in-situ Raman spectra obtained within the same grain in the PLZT ceramic by varying the polarization direction from 0° to 180° were susceptible to the coupled mechanical-electrical load. The Raman intensity (I) and the polarization angle (?) may be related by I = Im sin (2? + ?) + k. Under the action of the same intensity of the incident light, the variations in the fitting parameters k, Im, and ? might be referred to the changes in the orientation distributions and material constants of Raman tensors. The polarization direction for the Raman scattering intensity reaching maximum (?max) may be determined by2?max=?2??. The apparent reduction in Raman intensity and slight enhancement in ?max were observed under a coupled mechanical-electrical load.
Keywords:
Coupled load; Domain switching; Ferroelectric ceramics; In-situ Raman; Polarization angle
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