Improved piezoelectric, ferroelectric, pyroelectric and electrocaloric properties of Sm-substituted PMN-PT

Singh, Charanjeet; Vats, Gaurav; Kumar, Ashok

doi:10.1016/j.jallcom.2023.171355

Cited by 4 publications

(2 citation statements)

References 47 publications

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“…SAW devices are sensitive to the materials from which they are made, as the properties of the material can significantly influence the performance of the device. In a comparative study examining the application of quartz in contrast to PZT (lead zirconate titanate piezoelectric ceramics, PZT) ceramics and PMN-PT (magnesium niobate-lead titanate piezoelectric material, PMN-PT) single crystals for surface acoustic wave (SAW) devices, several key factors come into play that influence the bulk characteristics and the overall performance of the resulting SAW devices [23][24][25][26][27][28][29][30][31], as follows:…”

Section: The Baw In St-x Quartz Materialsmentioning

confidence: 99%

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Feng,

Yu,

Liu

et al. 2024

Micromachines

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Improving measurement accuracy is the core issue with surface acoustic wave (SAW) micro-force sensors. An electrode transducer can stimulate not only the SAW but also the bulk acoustic wave (BAW). A portion of the BAW can be picked up by the receiving transducer, leading to an unwanted or spurious signal. This can harm the device’s frequency response characteristics, thereby potentially reducing the precision of the micro-force sensor’s measurements. This paper examines the influence of anisotropy on wave propagation, and it also performs a phase-matching analysis between interdigital transducers (IDTs) and bulk waves. Two solutions are shown to reduce the influence of BAW for SAW micro sensors, which are arranged with acoustic absorbers at the ends of the substrate and in grooving in the piezoelectric substrate. Three different types of sensors were manufactured, and the test results showed that the sidelobes of the SAW micro-force sensor could be effectively inhibited (3.32 dB), thereby enhancing the sensitivity and performance of sensor detection. The SAW micro-force sensor manufactured using the new process was tested and the following results were obtained: the center frequency was 59.83 MHz, the fractional bandwidth was 1.33%, the range was 0–1000 mN, the linearity was 1.02%, the hysteresis was 0.59%, the repeatability was 1.11%, and the accuracy was 1.34%.

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Section: The Baw In St-x Quartz Materialsmentioning

confidence: 99%

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Feng,

Yu,

Liu

et al. 2024

Micromachines

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“…35 Kumar et al discovered that Sm-doping PMN–PT can significantly enhance its piezoelectric, ferroelectric, pyroelectric and electrocaloric properties. 38…”

Section: Introductionmentioning

confidence: 99%

Pyroelectric catalytic performance of Sm³⁺-modified Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ for organic dyes: degradation efficiency, kinetics and pyroelectric catalytic mechanism

Lin,

Ding,

et al. 2023

Dalton Trans.

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Acceleration waves in thermoelastic complex media with temperature-dependent phase fields

Giovine,

Mariano,

Mugnaioni

2024

Meccanica

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We analyze homothermal acceleration waves in complex materials (those with active microstructure) in the presence of internal constraints that link the temperature to a manifold-valued phase-field describing a generic material microstructure at a certain spatial scale. Such a constraint leads to hyperbolic heat conduction even in the absence of macroscopic strain; we show how it influences the way acceleration waves propagate. The scheme describes a thermoelastic behavior that is compatible with dependence of the free energy on temperature gradient (a dependence otherwise forbidden by the second law of thermodynamics in the traditional non-isothermal description of simple bodies). We eventually provide examples in which the general treatment that we develop applies.

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Improved piezoelectric, ferroelectric, pyroelectric and electrocaloric properties of Sm-substituted PMN-PT

Cited by 4 publications

References 47 publications

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Pyroelectric catalytic performance of Sm³⁺-modified Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ for organic dyes: degradation efficiency, kinetics and pyroelectric catalytic mechanism

Acceleration waves in thermoelastic complex media with temperature-dependent phase fields

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Improved piezoelectric, ferroelectric, pyroelectric and electrocaloric properties of Sm-substituted PMN-PT

Cited by 4 publications

References 47 publications

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Grooving and Absorption on Substrates to Reduce the Bulk Acoustic Wave for Surface Acoustic Wave Micro-Force Sensors

Pyroelectric catalytic performance of Sm3+-modified Pb(Mg1/3Nb2/3)O3–PbTiO3 for organic dyes: degradation efficiency, kinetics and pyroelectric catalytic mechanism

Acceleration waves in thermoelastic complex media with temperature-dependent phase fields

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Pyroelectric catalytic performance of Sm³⁺-modified Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ for organic dyes: degradation efficiency, kinetics and pyroelectric catalytic mechanism