Micro-Raman Imaging of Ferroelectric Domain Structures in the Bulk of PMN-PT Single Crystals

Zelenovskiy, P. S.; Greshnyakov, E. D.; Chezganov, D. S.; Gimadeeva, L. V.; Vlasov, E. O.; Hu, Qingyuan; Wei, Xiaoyong; Shur, V. Ya.

doi:10.3390/cryst9020065

Cited by 12 publications

(7 citation statements)

References 37 publications

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“…From Figure 4A, we can see that there is a certain difference in relative intensity of the Raman spectrum around 278 cm −1 between the original surface of the R phase (brown line) and T phase (blue line). The reason for comparing the relative intensity around 278 cm −1 is the main difference of the Raman peaks between the R‐ and T phase of PMN–PT single crystal, which is around 278 cm −1 according to existing studies in the literature 51–53 . Furthermore, in order to prove that the R phase transforms to the T phase under the indentation, we also performed Raman spectroscopy in the residual indentation area of the R phase, as shown by the green line in Figure 4A.…”

Section: Resultsmentioning

confidence: 81%

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

2022

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Understanding the phase transition behavior of the rhombohedral phase (R) and tetragonal phase (T) of the relaxor ferroelectric PMN–PT single crystals under mechanical load is essential for the potential voltage‐free controlled ferroelectric‐based nanodevices. Relaxor ferroelectric single crystals PMN–PT, under a local inhomogeneous mechanical load, were studied experimentally by the nanoindentation tests and Raman spectroscopy measurements. The observations show that the rhombohedral phase can be transformed successfully to the tetragonal phase under a mechanical stress, and the tetragonal phase in the PMN–PT single crystals presents a structural stability. The phase transition induced by the mechanical stress with different strain rates further indicates that the relaxor ferroelectric single crystals possess a potential mechanical controllability. The present study reveals the phase transition pathway of the relaxor ferroelectric single crystal under inhomogeneous stress and provides the exciting possibility of the control of mechanically induced phase transition for ferroelectrics.

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Section: Resultsmentioning

confidence: 81%

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

2022

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“…In very recent works, the electron beam poling (EBP) was successfully employed to create simple domain structures. [12] However, no individual domains or their structures located inside the crystal could be realized with this technique. Furthermore, EBP requires sophisticated equipment which drastically limits its practicality.…”

Section: Introductionmentioning

confidence: 99%

Optical Induction and Erasure of Ferroelectric Domains in Tetragonal PMN‐38PT Crystals

Chen

Liu

et al. 2021

Advanced Optical Materials

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Furthermore, they show extremely high electro-optic (EO) and acousto-optic (AO) coefficients. [2] Recent studies of quadratic nonlinearity of Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) crystals in powder form indicated their potential for nonlinear optics. [3] Because of these excellent properties, the relaxor-based ferroelectric crystals could be of great interest as piezoelectric phononic crystals (PPCs) or acoustic superlattices (ASLs) to confine and manipulate phonons for a wide range of applications, including acoustic filters, noise isolation, and heat managements. [4] Unlike the pure elastic phononic crystal, which usually consists of materials with different elastic moduli and/or mass densities, [5] the domain inversion phononic crystal (DIPC) is a monolithic entity within the single ferroelectric, making it more attractive in applications like surface acoustic wave (SAW) devices. [4a,b,6] Similarly, ferroelectrics with spatially modulated second-order optical nonlinear susceptibility χ (2) , also known as nonlinear photonic crystals (NPCs) or optical super lattices (OSLs), can be used to generate, shape, and manipulate optical waves at new frequencies [7] by utilizing the so called quasiphase matching (QPM). [8] However, the PT-relaxor ferroelectrics exhibit excellent piezoelectric and quadratic nonlinear optical properties, making them prominent candidates for realization of phononic and nonlinear photonic crystals which rely on spatially patterned ferroelectric domains. However, formation of domain patterns, especially in three dimensions, has been challenging. This paper presents the first experimental demonstration of localized ferroelectric domains and their 2D and 3D patterns inside 0.62Pb(Mg 1/3 Nb 2/3 )O 3 -0.38PbTiO 3 (PMN-38PT) single-domain crystals engineered with focused near-infrared femtosecond laser pulses. Two types of domains are optically induced. Primary domains are formed in the focal volume of the beam, and secondary domains appearing at higher laser power, in the shape of hollow cylindrical structures, are formed around the beam. A physical mechanism of optical domain inversion involving thermo electric and space charge fields is proposed. This study contributes to a deeper understanding of domain formation and structuring in PMN-PT relaxor-based ferroelectrics, paving the way to integrate electromechanical, acoustic, and nonlinear optical effects in a single crystal.

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“…This is ideal for external domain poling control, where 180° polarization switching can be realized by weak electric fields . Despite being known as highly nonlinear material with strong electro‐optical coefficients the reports on nonlinear optical properties remain limited to just second harmonic generation . To the best of our knowledge, the periodic poling has not been demonstrated for nonlinear PDC in bulk PMN‐PT materials.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, the periodic poling has not been demonstrated for nonlinear PDC in bulk PMN‐PT materials. However, a microscale periodically poled PMN‐PT with precise domain structure down to 5 µm has been demonstrated by electron beam patterning technique and also 200 nm pitch size by backswitch poling using nanopatterned composite electrodes . The main issues with PMN‐PT periodic poling has been the formations of cracks but very recently, there has been an important progress made in achieving high optical quality monodomain state in PMN‐PT by using prepoling thermal annealing to prevent cracking which is an important step for nonlinear optical applications of PMN‐PT material family.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Reconfigurable Mid‐IR Single Photon Sources Based on Functional Ferroelectrics

et al. 2020

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The future of quantum photonic technology depends on the realization of efficient sources of single photons, the ideal carriers of quantum information. Parametric downconversion (PDC) is a promising route to create highly coherent, spectrally pure single photons for quantum photonics using versatile group velocity matching (GVM) and tailored nonlinearities. However, the functionality to actively control the poling period of nonlinear crystals used in PDC is currently missing, yet would enable to dynamically modify the wavelength of single photons produced in the PDC process. Herein, a detailed GVM study is presented for functional PMN‐0.38PT material which can be dynamically repolled at ambient conditions with fields as low as 0.4 kV mm−1. The study reveals phase‐matching conditions for spectrally pure single photon creation at 5–6 µm. Further, a practical approach is proposed for on‐flight wavelength switching of the created single photons. The reported reconfigurable functionality benefits a wide range of emerging quantum‐enhanced applications in the mid‐IR spectral region where the choice of single photon sources is currently limited.

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Micro-Raman Imaging of Ferroelectric Domain Structures in the Bulk of PMN-PT Single Crystals

Cited by 12 publications

References 37 publications

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

Optical Induction and Erasure of Ferroelectric Domains in Tetragonal PMN‐38PT Crystals

Numerical Study of Reconfigurable Mid‐IR Single Photon Sources Based on Functional Ferroelectrics

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