Design and investigate the electrical properties of Pb(Mg0.2Zn0.2Nb0.2Ta0.2W0.2)O3–PbTiO3 high-entropy ferroelectric ceramics

Li, Xiang; Ma, Jinxu; Chen, Kepi; Li, Cuiwei; Zhang, Xiaowen; An, Linan

doi:10.1016/j.ceramint.2022.01.156

Cited by 26 publications

(4 citation statements)

References 41 publications

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“…[18] Due to the increment of configurational entropy, the alloys with a high piezoelectric response could be obtained when the number of substituted components is optimized. [19][20][21][22] As a result, by doping 2D-TMDs, enhanced piezoelectricity may be realized. However, enhanced piezoelectricity has not been observed from increased entropy 2D-TMDs alloys so far and the related sensing devices have not been reported.…”

Section: D Transition Metal Dichalcogenides (Tmds) Are Intrinsically ...mentioning

confidence: 99%

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

et al. 2022

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Piezoelectricity in 2D transition metal dichalcogenides (TMDs) has attracted considerable interest because of their excellent flexibility and high piezoelectric coefficient compared to conventional piezoelectric bulk materials. However, the ability to regulate the piezoelectric properties is limited because the entropy is constant for certain binary TMDs other than multielement ones. Herein, in order to increase the entropy, a ternary TMDs alloy, Mo1−xWxS2, with different W concentrations, is synthesized. The W concentration in the Mo1−xWxS2 alloy can be controlled precisely in the low‐supersaturation synthesis and the entropy can be tuned accordingly. The Mo0.46W0.54S2 alloy (x = 0.54) has the highest configurational entropy and best piezoelectric properties, such as a piezoelectric coefficient of 4.22 pm V−1 and a piezoelectric output current of 150 pA at 0.24% strain. More importantly, it can be combined into a larger package to increase the output current to 600 pA to cater to self‐powered applications. Combining with excellent mechanical durability, a mechanical sensor based on the Mo0.46W0.54S2 alloy is demonstrated for real‐time health monitoring.

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Section: D Transition Metal Dichalcogenides (Tmds) Are Intrinsically ...mentioning

confidence: 99%

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

et al. 2022

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“…23,39 For instance, Chen et al 40 achieved an ultrahigh entropy concept with (Bi 0.5 Na 0.5 )(Ti 1/3 Fe 1/3 Nb 1/3 )O 3 , obtaining an extremely high recoverable energy density (W rec ) of ∼13.8 J/ cm 3 and a large efficiency (η) of ∼82.4%. Li et al 41 23 engineered the polarization configuration of ferroelectrics and successfully prepared highentropy lead-based piezoelectrics, achieving a significantly high d 33 value approximately of 1200 pC/N. However, to our knowledge, most of the reported high-entropy perovskite piezoelectrics are lead-based materials, and rare lead-free highentropy counterparts have been reported so far.…”

Section: Introductionmentioning

confidence: 99%

“…The superior properties of high-entropy ceramics have great potential applications in the fields of thermoelectric conversion, catalysis, energy storage, etc. − Notably, the structural features of ABO 3 -type materials are highly adaptable to modulate the lattice distortion by adjusting the ion occupancy, and large lattice distortion is one of the major sources of high piezoelectric properties, as given in a recent analysis in BF-based materials by Wang et al The concept of substituting A/B sites in the ABO 3 structure to modify the local polarization configuration and modulate lattice distortion shares similar properties with the second-generation high-entropy concept, which involves adding five or more major elements to A/B sites providing more room for adjusting lattice and increasing the system’s stochasticity. , For instance, Chen et al achieved an ultrahigh entropy concept with (Bi 0.5 Na 0.5 )(Ti 1/3 Fe 1/3 Nb 1/3 )O 3 , obtaining an extremely high recoverable energy density ( W rec ) of ∼13.8 J/cm 3 and a large efficiency (η) of ∼82.4%. Li et al successfully constructed (1– x )Pb(Mg 0.2 Zn 0.2 Nb 0.2 Ta 0.2 W 0.2 )O 3 – x PbTiO ceramics with a MPB structure, obtaining d 33 ∼ 92 pC/N. Additionally, Liu et al engineered the polarization configuration of ferroelectrics and successfully prepared high-entropy lead-based piezoelectrics, achieving a significantly high d 33 value approximately of 1200 pC/N.…”

Section: Introductionmentioning

confidence: 99%

Bismuth Ferrite-Based Lead-Free High-Entropy Piezoelectric Ceramics

Li,

Zhao,

et al. 2024

ACS Appl. Mater. Interfaces

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Piezoelectric ceramics, as essential components of actuators and transducers, have captured significant attention in both industrial and scientific research. The "entropy engineering" approach has been demonstrated to achieve excellent performance in lead-based materials. In this study, the "entropy engineering" approach was employed to introduce the morphotropic phase boundary (MPB) into the bismuth ferrite (BF)-based lead-free system. By employing this strategy, a serial of novel "medium to high entropy" lead-free piezoelectric ceramics were successfully synthesized, namely (1−x)BiFeO 3 −x(Ba 0.2 Sr 0.2 Ca 0.2 Bi 0.2 Na 0.2 )TiO 3 (BF− xBSCBNT, x = 0.15−0.5). Our investigation systematically examined the phase structure, domain configuration, and ferroelectric/ piezoelectric properties as a function of conformational entropy. Remarkable performances with a largest strain of 0.50% at 100 kV/ cm, remanent polarization ∼40.07 μC/cm 2 , coercive field ∼74.72 kV/cm, piezoelectric coefficient ∼80 pC/N, and d 33 * ∼500 pm/V were achieved in BF−0.4BSCBNT ceramics. This exceptional performance can be attributed to the presence of MPB, coexisting rhombohedral and cubic phases, along with localized nanodomains. The concept of high-entropy lead-free piezoelectric ceramics in this study provides a promising strategy for the exploration and development of the next generation of lead-free piezoelectric materials.

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“…ABO 3 perovskite oxides are usually stable and can be efficiently controlled by choosing appropriate A and B atoms or chemical dopants as A′ x A 1– x B′ x B 1– x O 3 materials . A variety of physical properties (including ferroelectric, dielectric, thermoelectric, and piezoelectric) make ABO 3 perovskite oxide materials a research hotspot in photoelectric fields. Ma et al fabricated an enhanced UV detector based on BaTiO 3 by the pyroelectric effect, and Cao et al improved the performance of the photodetector using the polarized ferroelectric field of SrTiO 3 …”

Section: Introductionmentioning

confidence: 99%

CuTiO₃/TiO₂ MSM UV Photodetector with a Type-I Heterojunction for Rapid and Low-Power Detection

Zhang,

Bi,

Liu

et al. 2024

ACS Appl. Electron. Mater.

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Dark current and response speed matter a lot in UV detection. TiO 2 MSM UV detectors offer many positive attributes, including chemical stability and excellent absorption in the UV region. However, they also have a high dark current and a poor response time. To get around these drawbacks, an MSM UV detector based on the CuTiO 3 /TiO 2 type-I heterojunction was created in this work. The introduction of high-dielectric perovskite CuTiO 3 reduces carriers and thus leads to a low dark current (8.06 × 10 −12 A). Furthermore, type-I heterojunction properties of the CuTiO 3 /TiO 2 heterojunction significantly restrict the recombination process of photogenerated carriers in TiO 2 , improving response and recovery times (78 and 93 ms). The findings suggested that high-performance UV photodetectors might be created by combining conventional wide-band-gap semiconductor materials with high-dielectric perovskite CuTiO 3 .

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Design and investigate the electrical properties of Pb(Mg0.2Zn0.2Nb0.2Ta0.2W0.2)O3–PbTiO3 high-entropy ferroelectric ceramics

Cited by 26 publications

References 41 publications

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

Bismuth Ferrite-Based Lead-Free High-Entropy Piezoelectric Ceramics

CuTiO₃/TiO₂ MSM UV Photodetector with a Type-I Heterojunction for Rapid and Low-Power Detection

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Design and investigate the electrical properties of Pb(Mg0.2Zn0.2Nb0.2Ta0.2W0.2)O3–PbTiO3 high-entropy ferroelectric ceramics

Cited by 26 publications

References 41 publications

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

2D Transition Metal Dichalcogenide with Increased Entropy for Piezoelectric Electronics

Bismuth Ferrite-Based Lead-Free High-Entropy Piezoelectric Ceramics

CuTiO3/TiO2 MSM UV Photodetector with a Type-I Heterojunction for Rapid and Low-Power Detection

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CuTiO₃/TiO₂ MSM UV Photodetector with a Type-I Heterojunction for Rapid and Low-Power Detection