High piezoelectricity of Eu3+-doped Pb(Mg1/3Nb2/3)O3–0.25PbTiO3 transparent ceramics

Li, Kai; Sun, Enwei; Zhang, Yongcheng; Song, Zhenzhen; Qi, Xudong; Sun, Yuan; Li, Jiaming; Yang, Bin; Liu, Jian; Cao, Wenwu

doi:10.1039/d0tc05351a

Cited by 40 publications

(20 citation statements)

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“…The transparent PMN-PT ceramics also have the advantages of a higher piezoelectric coefficient, a higher electromechanical coupling coefficient, and a higher Curie temperature. Eu 3+ -doped PMN-PT ceramics have a high piezoelectric charge coefficient (d 33~8 50 pC/N) and effective piezoelectric strain coefficient (d 33 *~1520 pm/V) [65]. The report proves that doping with rare earth elements is effective for fabricating transparent PMN-PT with enhanced piezoelectric performance, which is also beneficial to the design and development of transparent PMN-PT US sensors.…”

Section: Transparent Piezoelectric-based Us Sensorsmentioning

confidence: 65%

A Review of Transparent Sensors for Photoacoustic Imaging Applications

et al. 2021

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Photoacoustic imaging is a new type of noninvasive, nonradiation imaging modality that combines the deep penetration of ultrasonic imaging and high specificity of optical imaging. Photoacoustic imaging systems employing conventional ultrasonic sensors impose certain constraints such as obstructions in the optical path, bulky sensor size, complex system configurations, difficult optical and acoustic alignment, and degradation of signal-to-noise ratio. To overcome these drawbacks, an ultrasonic sensor in the optically transparent form has been introduced, as it enables direct delivery of excitation light through the sensors. In recent years, various types of optically transparent ultrasonic sensors have been developed for photoacoustic imaging applications, including optics-based ultrasonic sensors, piezoelectric-based ultrasonic sensors, and microelectromechanical system-based capacitive micromachined ultrasonic transducers. In this paper, the authors review representative transparent sensors for photoacoustic imaging applications. In addition, the potential challenges and future directions of the development of transparent sensors are discussed.

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Section: Transparent Piezoelectric-based Us Sensorsmentioning

confidence: 65%

A Review of Transparent Sensors for Photoacoustic Imaging Applications

et al. 2021

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“…Besides, other RE 3+ ‐doped PMN‐PT and PMN‐PT‐based ceramics were also reported, such as La 3+ ‐doped PMN‐PT ceramics, 13 Sm 3+ ‐doped Pb(Sc 1/2 Nb 1/2 )O 3 ‐Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PSN‐PMN‐PT) ceramics, 14 and Pr 3+ ‐doped PIN‐PMN‐PT ceramics 15 . The ferroelectric, piezoelectric, and energy storage properties of these systems were well changed by RE 3+ dopants, but their common point is that when the RE 3+ doping concentration exceeds a certain value, an undesirable pyrochlore phase will appear in the phase structure, making these ceramics difficult to achieve the best state 3,9–15 . The effective approach to eliminating this kind of pyrochlore phase is still unclear, greatly limiting the development of RE 3+ ‐doped PMN‐PT‐based ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…15 The ferroelectric, piezoelectric, and energy storage properties of these systems were well changed by RE 3+ dopants, but their common point is that when the RE 3+ doping concentration exceeds a certain value, an undesirable pyrochlore phase will appear in the phase structure, making these ceramics difficult to achieve the best state. 3,[9][10][11][12][13][14][15] The effective approach to eliminating this kind of pyrochlore phase is still unclear, greatly limiting the development of RE 3+doped PMN-PT-based ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…There are also many reports on donor‐doped PMN‐PT ceramics, and the donor dopants are usually rare‐earth ions (RE 3+ ). In recent years, Sm 3+ ‐doped and Eu 3+ ‐doped PMN‐PT ceramics with ultrahigh piezoelectricity have been prepared successfully 3,9–12 . The reason for the ultrahigh piezoelectricity is the local structural heterogeneity introduced in ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, Sm 3+ -doped and Eu 3+ -doped PMN-PT ceramics with ultrahigh piezoelectricity have been prepared successfully. 3,[9][10][11][12] The reason for the ultrahigh piezoelectricity is the local structural heterogeneity introduced in ceramics. The local structural heterogeneity can generate interfacial energies that compete with the bulk energies, flattening the free-energy profile and enhancing ε r and d 33 .…”

Section: Introductionmentioning

confidence: 99%

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Elimination of pyrochlore phase in high‐concentration Sm³⁺‐doped PMN‐PT piezoelectric ceramics by excessive MgO

Yang

Sun

et al. 2022

J Am Ceram Soc.

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Undesirable pyrochlore phase often appears in Pb(Mg1/3Nb2/3)O3‐PbTiO3 (PMN‐PT)‐based ceramics with high rare‐earth ion (RE3+) doping concentration, which greatly limits their development. In this study, 0–5 mol% Sm3+‐doped Pb(Mg1/3Nb2/3)O3‐29PbTiO3 (PMN‐29PT:0‐5Sm) ceramics were first synthesized using traditional precursor method. In the X‐ray diffraction spectra and scanning electron microscope images of PMN‐29PT:3‐5Sm ceramics, the diffraction peaks of pyrochlore phase and pyrochlore grains with octahedral morphology were observed, respectively. The reason for the appearance of the pyrochlore phase is that Sm3+ doping causes the Nb‐rich regions. To eliminate the pyrochlore phase, PMN‐29PT:3‐5Sm ceramics were resynthesized by an improved precursor method in which an excess of 4 mol% MgO was added to the reactants before pre‐sintering. After adding an excess of 4 mol% MgO, the concentration ratio of Nb5+ and Mg2+ in the pyrochlore grains returned to the value in the perovskite grains, and the pyrochlore phase was transformed into the perovskite phase PMN. The dielectric, ferroelectric, and electromechanical properties were compared before and after eliminating the pyrochlore phase. The results show that the comprehensive performance of the ceramics is improved after eliminating the pyrochlore phase.

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PVDF‐Based Flexible Piezoelectric Tactile Sensors: Review

Qi,

Xu,

et al. 2023

Cryst. Res. Technol.

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With the advent of the intelligence era, flexible piezoelectric tactile sensors are the key components for sensing information and sending signals. The performance parameters of piezoelectric sensors are closely related to the selection of piezoelectric materials. Compared with conventional piezoelectric materials, polyvinylidene fluoride (PVDF) has significant advantages in flexibility, stretchability, chemical stability, electromechanical conversion, ease of use, and acoustic propagation impedance. As a result, PVDF has become a popular topic of research. This paper introduces the working principle of piezoelectric materials and flexible piezoelectric sensors based on PVDF materials and details the research progress of different materials based on PVDF for the preparation of flexible piezoelectric tactile sensors, such as: PVDF and its copolymers for the preparation of flexible piezoelectric sensors and PVDF doped with other functional materials for the preparation of flexible piezoelectric sensors. In this paper, the advantages and disadvantages of different materials and the development prospects of PVDF flexible piezoelectric sensors are summarized to provide some insights for high‐performance flexible PVDF piezoelectric sensors.

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High piezoelectricity of Eu³⁺-doped Pb(Mg_1/3Nb_2/3)O₃–0.25PbTiO₃ transparent ceramics

Abstract: Optically transparent Eu3+-doped Pb(Mg1/3Nb2/3)O3–0.25PbTiO3 (PMN–0.25PT:Eu3+) relaxor ferroelectric ceramics with high piezoelectricity were prepared by oxygen-atmosphere sintering followed by hot-press sintering.

Cited by 40 publications

References 45 publications

A Review of Transparent Sensors for Photoacoustic Imaging Applications

A Review of Transparent Sensors for Photoacoustic Imaging Applications

Elimination of pyrochlore phase in high‐concentration Sm³⁺‐doped PMN‐PT piezoelectric ceramics by excessive MgO

PVDF‐Based Flexible Piezoelectric Tactile Sensors: Review

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High piezoelectricity of Eu3+-doped Pb(Mg1/3Nb2/3)O3–0.25PbTiO3 transparent ceramics

Abstract: Optically transparent Eu3+-doped Pb(Mg1/3Nb2/3)O3–0.25PbTiO3 (PMN–0.25PT:Eu3+) relaxor ferroelectric ceramics with high piezoelectricity were prepared by oxygen-atmosphere sintering followed by hot-press sintering.

Cited by 40 publications

References 45 publications

A Review of Transparent Sensors for Photoacoustic Imaging Applications

A Review of Transparent Sensors for Photoacoustic Imaging Applications

Elimination of pyrochlore phase in high‐concentration Sm3+‐doped PMN‐PT piezoelectric ceramics by excessive MgO

PVDF‐Based Flexible Piezoelectric Tactile Sensors: Review

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High piezoelectricity of Eu³⁺-doped Pb(Mg_1/3Nb_2/3)O₃–0.25PbTiO₃ transparent ceramics

Elimination of pyrochlore phase in high‐concentration Sm³⁺‐doped PMN‐PT piezoelectric ceramics by excessive MgO