Relevant bibliographies by topics / Pyroelectric coefficient

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Pyroelectric coefficient'

Author: Grafiati
Published: 1 June 2024

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Journal articles on the topic "Pyroelectric coefficient"

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Sarker, Md Rashedul H., Jorge L. Silva, Mariana Castañeda, Bethany Wilburn, Yirong Lin, and Norman Love. "Characterization of the pyroelectric coefficient of a high-temperature sensor." Journal of Intelligent Material Systems and Structures 29, no. 5 (2017): 938–43. http://dx.doi.org/10.1177/1045389x17721376.

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Temperature is one of the most important thermodynamic properties measured and controlled in energy generation systems. To operate the energy system at optimum operating conditions for lower emission and higher efficiency, it is important to measure real-time temperatures. Furthermore, temperature sensing in intense environments is necessary since most sensors in energy systems get exposed to elevated temperatures, corrosive environments, and elevated pressures. One of the solutions for developing harsh environment sensors is to use ceramic materials, especially functional ceramics such as pyr
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Davydov C. Yu. "Pyroelectric coefficient estimations for aluminum and gallium compounds." Physics of the Solid State 64, no. 5 (2022): 510. http://dx.doi.org/10.21883/pss.2022.05.53508.248.

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Analytical expression for pyroelectric coefficient p for the compounds with wurtzit structure is given. Obtained values of p for AlN and GaN are in satisfactory agreement with the first-principles calculations. Pyroelectric effect in the uniform epitaxial films and heterostructures is discussed. Keywords: pyroelectric coefficient, wurtzite structure, monocrystal, thin film, heterostructure.
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Pintilie, L., I. Pintilie, and I. Matei. "Equivalent pyroelectric coefficient of a pyroelectric bimorph structure." Journal of Applied Physics 88, no. 12 (2000): 7264–71. http://dx.doi.org/10.1063/1.1327284.

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Liang, Ting, Si Jia Lin, Ying Li, Cheng Lei, and Chen Yang Xue. "Research on the Effect of Mechanical Processing on Lithium Tantalate Crystal Pyroelectric Coefficient." Advanced Materials Research 834-836 (October 2013): 880–84. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.880.

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Lithium tantalate (LT) is a kind of excellent pyroelectric materials that can be made into high performance pyroelectric detector. As the detector voltage response and detection rate inversely proportional to the thickness of the infrared sensing element, So the thinning of lithium tantalate crystals becomes a key of success. This design uses CMP method to produce 50 μm thickness of LT wafer, and via charge integration method with computer automatic test system to test the pyroelectric coefficient of crystals with different thickness and surface roughness. The pyroelectric coefficient of cryst
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Fan, Mao Yan, Yang Yang Zhang, Qing Feng Zhang, Guang Zu Zhang, and Lin Lu. "Piezoelectric, Dielectric and Pyroelectric Property in Morphotropic Phase Boundary MnO2 Doped Bi0.5(Na0.82K0.18)0.5TiO3/P(VDF-TrFE) 0-3 Composites." Advanced Materials Research 535-537 (June 2012): 55–60. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.55.

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MnO2 doped Bi0.5(Na0.82K0.18)0.5TiO3/P(VDF-TrFE) 0-3 composites with high pyroelectric coefficient were prepared for different volume fractions of MnO2 doped Bi0.5(Na0.82K0.18)0.5TiO3 ceramic powder in P(VDF-TrFE) copolymer matrix. The dielectric constant, dielectric loss and the piezoelectric coefficient increased as MnO2 doped Bi0.5(Na0.82K0.18)0.5TiO3 ceramic volume fraction increased. The pyroelectric coefficient and figure of merit of Bi0.5(Na0.82K0.18)0.5TiO3/P(VDF-TrFE) with different MnO2 amount and 0.8mol% MnO2 doped Bi0.5(Na0.82K0.18)0.5TiO3/P(VDF-TrFE) as a function of ceramic volum
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Asaji, Tetsuo, and Alarich Weiss. "Pyroelectricity of Molecular Crystals: Benzene Derivatives." Zeitschrift für Naturforschung A 40, no. 6 (1985): 567–74. http://dx.doi.org/10.1515/zna-1985-0607.

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The pyroelectric coefficient at constant stress was measured for meta-nitroaniline, meta-amino-phenol, and 2,3-dichlorophenol in the temperature range 90 Ù T/ K ⪅ % melting point. A change in sign of the pyroelectric coefficient was observed in meta-nitroaniline and 2,3-dichlorophenol. At room temperature p3s is 9 m Cm−2 K−1 for meta-nitroaniline, 42 m Cm−2 K−1 for meta-aminophenol, and 0.3 m Cm−2 K−1 for 2,3-dichlorophenol (at 263 K for the latter one). By a classical harmonic oscillator model the contribution to the pyroelectric coefficient due to molecular dipole librational motions was est
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Jiang, Zibo, and Zuo-Guang Ye. "Application study of Mn-doped PIN-PMN-PT relaxor ferroelectric crystal grown by Vertical Gradient Freeze method." Ferroelectrics 557, no. 1 (2020): 9–17. http://dx.doi.org/10.1080/00150193.2020.1713358.

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A 3-inch Mn:PIN-36%PMN-32%PT (Generation III) relaxor ferroelectric crystal was grown using the Vertical Gradient Freeze method. Crystals of [1, 11] and [111] orientations were prepared and studied, evaluating their dielectric constants, piezoelectric coefficients, electromechanical coupling coefficients, loss tangents and pyroelectric coefficients. It is shown that in pyroelectric applications, [111]-poled crystals are particularly suitable for high performance sensors due to a relatively high pyroelectric coefficient, low loss tangent. In addition, the specific heat is lower as compared to L
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Sharofidinov Sh. Sh., Kukushkin S. A., Staritsyn M. V., et al. "Structure and properties of composites based on aluminum and gallium nitrides grown on silicon of different orientations with a buffer layer of silicon carbide." Physics of the Solid State 64, no. 5 (2022): 516. http://dx.doi.org/10.21883/pss.2022.05.53510.250.

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The microstructure and pyroelectric properties of AlxGa1-xN composite epitaxial layers grown on SiC/Si(111) and SiC/Si(110) hybrid substrates by the chloride-hydride epitaxy have been studied. The phenomenon of spontaneous formation of a system of heterojunctions consisting of periodic AlxGa1-xN layers of different composition located perpendicular to the direction of growth, was discovered during the growth of layers. Measurements of the pyroelectric coefficients of these heterostructures have shown that regardless of the orientation of the initial Si substrate and their pyroelectric coeffici
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Hesterberg, Rolf, Michel Bonin, Martin Sommer, et al. "Vapour growth, morphology, absolute structure and pyroelectric coefficient of meta-nitroaniline single crystals." Journal of Applied Crystallography 52, no. 3 (2019): 564–70. http://dx.doi.org/10.1107/s160057671900414x.

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The growth speed of (hkl) faces in the vapour phase, the absolute structure obtained by X-ray crystallography, and the value and the sign of the pyroelectric coefficient of meta-nitroaniline (mNA) were analysed in detail. The in situ observation of morphologically well developed faces of several mNA crystals growing in evacuated ampoules reveals no pronounced growth speed anisotropy for polar faces defining the unique axis 2 of the mm2 group. Scanning pyroelectric microscopy confirms mono-domain mNA crystals. X-ray measurements in the space group Pca21 show that the molecular planes coincide w
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Шарофидинов, Ш. Ш., С. А. Кукушкин, М. В. Старицын та ін. "Структура и свойства композитов на основе нитридов алюминия и галлия, выращенных на кремнии разной ориентации с буферным слоем карбида кремния". Физика твердого тела 64, № 5 (2022): 522. http://dx.doi.org/10.21883/ftt.2022.05.52331.250.

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The microstructure and pyroelectric properties of AlxGa1-xN composite epitaxial layers grown on SiC/Si(111) and SiC/Si(110) hybrid substrates by the chloride-hydride epitaxy have been studied. The phenomenon of spontaneous formation of a system of heterojunctions consisting of periodic AlxGa1-xN layers of different composition located perpendicular to the direction of growth, was discovered during the growth of layers. Measurements of the pyroelectric coefficients of these heterostructures have shown that regardless of the orientation of the initial Si substrate and their pyroelectric coeffici
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Dissertations / Theses on the topic "Pyroelectric coefficient"

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Kaddoussi, Hana. "Étude de l'effet électrocalorique en corrélation avec les propriétés structurales, pyroélectrique et ferroélectrique de la solution Ba1-xCax(Zr0,1Ti0,9)1-ySnyO3." Electronic Thesis or Diss., Amiens, 2016. http://www.theses.fr/2016AMIE0025.

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Trois solutions solides à base de BZT sous forme de céramiques, ont été étudiées. Leurs propriétés pyroélectrique et ferroélectrique ont été déterminées dans le but de caractériser leurs performances électrocaloriques. Deux approches différentes ont été effectuées pour le calcul de l'effet électrocalorique : l'enregistrement des cycles d'hystérésis P-E en fonction de la température et la mesure du courant pyroélectrique. Ces deux méthodes d'investigations aboutissent à des résultats équivalents.Nous avons mis en évidence le caractère ferroélectrique dans tous les composés étudiés et montré que
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Book chapters on the topic "Pyroelectric coefficient"

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Sakhnenko, V. P., Yu N. Zakharov, I. A. Parinov, et al. "Electric Response to Bending Vibrations and Pyroelectric Effect in Unpolarized Ferroelectric Ceramic Plates with Electrodes, Differing in the Magnitude of the Coefficient of Thermal Expansion on Opposite Surfaces." In Springer Proceedings in Physics. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78919-4_13.

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Newnham, Robert E. "Pyroelectricity." In Properties of Materials. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198520757.003.0010.

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As the name implies, pyroelectricity is a first rank tensor property relating a change polarization P to a change in temperature δT. The defining relation can also be written in terms of the electric displacement D since no field is applied: . . . Pi = Di = piδT [C/m2]. . . Pyroelectricity is a first rank polar tensor because of the way it transforms. Being polar vectors, Pi and Di transform as . . . D'i = aijDj . . . whereas the temperature change transforms as a zero rank tensor, or a scalar: . . . δT' = δT. . . . Transforming the defining relation for pyroelectricity we get . . . D'i = aijDj = aijpjδT = aijpjδT' = p'iδT'. . . . Both the independent variable δT and the dependent variable Di have now been transformed to the new coordinate system. The property relating D'i to δT' is the transformed pyroelectric coefficient p'i = aijpj. Thus the pyroelectric coefficient is a polar first rank tensor property. In Sections 6.1 and 7.3 it was shown that the electrocaloric effect and the pyroelectric effect are governed by the same set of coefficients pi. The change in entropy per unit volume caused by an electric field is . . . δS = piEi [J/m3]. The pyroelectric (=electrocaloric coefficient) coefficient is usually expressed in units of μC/m2 K and can be either positive or negative in sign depending on whether the spontaneous (built-in) polarization is increasing or decreasing with temperature. Pyroelectricity disappears in all centrosymmetric materials. The proof follows. For a first rank tensor there are, in general, three nonzero coefficients p1, p2, and p3 representing the values of the pyroelectric coefficient along property axes Z1, Z2, and Z3, respectively. The principal axes are perpendicular to each other and are chosen in accordance with the IEEE convention (Section 4.3).
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Conference papers on the topic "Pyroelectric coefficient"

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Banet, L., J. Castellon, G. Malucelli, et al. "Determination of the pyroelectric coefficient within pyroelectric materials by using space charge measurements." In 2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2012). IEEE, 2012. http://dx.doi.org/10.1109/ceidp.2012.6378759.

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Acosta, Krystal L., William K. Wilkie, and Daniel J. Inman. "Pyroelectric Coefficient Enhancement of Macro-fiber Composites using Electric Fields." In AIAA Scitech 2020 Forum. American Institute of Aeronautics and Astronautics, 2020. http://dx.doi.org/10.2514/6.2020-0151.

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Hockley, M. J., H. H. S. Chang, and Z. Huang. "Pyroelectric coefficient under open circuit condition and its enhacement through product property." In European Conference on the Applications of Polar Dielectrics (ECAPD). IEEE, 2010. http://dx.doi.org/10.1109/isaf.2010.5712230.

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Xie, J., P. P. Mane, C. W. Green, K. M. Mossi, and Kam K. Leang. "Energy Harvesting by Pyroelectric Effect Using PZT." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-605.

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This paper considers energy harvesting using pyroelectric materials such as PZT-5A and thin-films. A simple model is used to predict the power generated based on the measured temperature of the material as a function of time. The measured and predicted results are presented and compared. In particular, the measured peak power density for a PZT-5A sample was 0.23 μWcm−2 for a maximum temperature rate of approximately 15 °Cs−1. The predicted peak power density under the same boundary conditions for thin-film lead scandium tantalate was over 125 μWcm−2. The power density is shown to be highly dep
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Lee, Soochan, Nishant Singh, Patrick E. Phelan, and Carole-Jean Wu. "Harvesting CPU Waste Heat Through Pyroelectric Materials." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48421.

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Modern CPUs generate considerable wasted heat due to increased power dissipation from high-performance computation. Lots of research effort has extensively focused on using thermoelectric generators (TEGs) to harvest CPU waste heat to increase overall system energy efficiency. To harvest waste heat using TEGs requires a significant temperature differential between the processor as a heat source and the heat spreader/heat sink, as well as a high heat flow. However, the heat-to-electricity conversion efficiency is typically limited to 15 to 20 percent, due to large heat conductivity, low Seebeck
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Lee, Najae, Dae Won Ji, Sang-joo Kim, and Yong Soo Kim. "Evolution of Linear Moduli and Nonlinear Responses of a PZT Wafer Under Electric Field at Room and High Temperatures." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8012.

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A poled PZT wafer is subject to electric field loading of pulse type whose magnitude is increasing and then decreasing during a complete cycle of polarization reversal at four room and high temperatures. The PZT wafer is also subject to pure temperature increase from 20 to 110 Celsius degree at various initial states. During the two experiments, electric displacement and in-plane strain are measured. From the measured data, piezoelectric coefficient, permittivity, pyroelectric coefficient, and thermal expansion coefficient are evaluated and their distribution over remnant polarization and temp
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Matveev, Nikolay, Viktor Saushkin, Natalya Evsikova, Nina Kamalova, and Viktor Lisitsyn. "Formalized modeling of pyroelectric coefficient dependence on the kinematic viscosity during the first order phase transitions in oligodimethylsiloxanes." In PROCEEDINGS OF THE XV INTERNATIONAL CONFERENCE «PHYSICS OF DIELECTRICS». AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0033266.

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Kweon, G., G. Beadie, and N. M. Lawandy. "Pyroelectric detection of light beams using a phase transition in guest–host compounds." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.mhh7.

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Because of their relative ease of fabrication, β-quinol clath-rates are one of the most studied among non- stoichiometric inclusion compounds. (quinol)3(CH3OH) x with x close to 1 has shown1 spontaneous polarization at a critical temperature near 66 K accompanying induced voltage across the sample. During the phase transition, the enclathrated methanol undergoes a sudden cooperative re-orientation during which the angle between the methanol C–O bond and the crystallographic C-axis changes discontinuously. This produces a large pyroelectric coefficient for high occupancy methanol clathrates, wh
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Lee, Ho-Jun, and Dimitris A. Saravanos. "Thermal Shape Control of Active and Sensory Piezoelectric Composite Plates." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0726.

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Abstract Previously developed mechanics for piezoelectric composite materials are extended to account for thermal effects. The updated mechanics accounts for thermal effects which arise due to: (1) coefficient of thermal expansion mismatch between the various composite and piezoelectric layers, (2) pyroelectric effects on the piezoelectric plies, and (3) the temperature dependence of the composite and piezoelectric properties. The coupled mechanical, electrical, and thermal response of piezoelectric composite materials is captured at the material level. A layerwise laminate theory is formulate
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Ju, Y. Sungtaek. "Theoretical Analysis of Pyroelectric Harvesting of Low-Grade Exhaust Waste Heat." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53042.

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Efficient and cost-effective harvesting of exhaust waste heat represents significant opportunities for improving the overall energy efficiency of combined heat and power cycles, transportation vehicles, and industrial processes. Pyroelectric thermal energy harvesting is interesting for its potentially high efficiency. We report a design concept and related thermal models for harvesting of exhaust waste heat based on the pyroelectric effect. The design concept utilizes switchable thermal interfaces formed on duct walls of exhaust gas and liquid coolants to achieve temporal thermal cycling of py
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Reports on the topic "Pyroelectric coefficient"

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Ivill, Mathew, Eric Ngo, and Melanie W. Cole. Method and Characterization of Pyroelectric Coefficients for Determining Material Figures of Merit for Infrared (IR) Detectors. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada592778.

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