Thermal properties of PZT-based ferroelectric ceramics

Kallaev, S. N.; Гаджиев, Г. Г.; Kamilov, I. K.; Omarov, Z. M.; Sadykov, S. A.; Резниченко, Л. А.

doi:10.1134/s1063783406060473

Cited by 41 publications

(25 citation statements)

References 3 publications

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“…The density d, specific heat c, and the heat conductivity d for the PZT layer are: 7600 Kg m À3 ; 350 J Kg À1 K À1 (d*c ¼ 2.6 Â 10 6 J m À3 K À1 ), and 1.1 W m À1 K À1 . 6,22 For the STO substrate, the same quantities are: 5120 Kg m À3 ; 544 J Kg À1 K À1 , and 11.2 W m À1 K À1 . 23,24 A quantity L H1,2 ¼ (d 1,2 /jxc 1,2 d 1,2 ) 1/2 is introduced in the above mentioned model, where j is the complex number, x is the pulsation of the incident IR radiation (x ¼ 2pf, with f being the chopping frequency of the IR radiation incident on the pyroelectric element), and the subscripts 1, 2 stand for the PZT layer and STO substrate, respectively.…”

mentioning

confidence: 97%

Giant pyroelectric coefficient determined from the frequency dependence of the pyroelectric signal generated by epitaxial Pb(Zr0.2Ti0.8)O3 layers grown on single crystal SrTiO3 substrates

Botea

Iuga

Pintilie

2013

Applied Physics Letters

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Epitaxial Pb(Zr0.2Ti0.8)O3 layers of good structural quality were grown on single crystal SrTiO3 substrates. The pyroelectric coefficient was estimated from the signal generated by the ferroelectric film working as a pyroelectric detector in the voltage mode, without pre-poling procedure. The obtained value is as high as 1.9 × 10−3 C/m2 K. The large value is attributed to the presence of 90° ferroelectric domains and to the compressive misfit strain, leading to an enhanced ferroelectric polarization.

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mentioning

confidence: 97%

Giant pyroelectric coefficient determined from the frequency dependence of the pyroelectric signal generated by epitaxial Pb(Zr0.2Ti0.8)O3 layers grown on single crystal SrTiO3 substrates

Botea

Iuga

Pintilie

2013

Applied Physics Letters

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“…This type of measurement is not suited to frequencies above a few mHz. Pushrod dilatometers have been used to measure the coupling between piezoelectric and thermal expansion and their relation to electrostriction and charge control of actuation in soft PZT up to 200 °C [2], [3] as well as straightforward thermal expansion measurement [5] (the latter using a capacitive sensor). A pushrod / LVDT arrangement, in combination with an external load sensor was used to measure both stress and strain at temperatures up to 150 °C, allowing assessment of the work output of an actuator at elevated temperature [24].…”

Section: Measurement Of the Converse Piezoelectric Effect At High Temmentioning

confidence: 99%

“…The actuator movement must be aligned with the valve opening to ensure that the OPEN and CLOSED states can be reached. The positioning of the actuator relative to the valve is affected by thermal expansion which can show complex behaviour in ferroelectrics [2], [3][4] [5]. Thermal expansion is also important for reliable device assembly in applications such as high temperature transducers for non-destructive evaluation (NDE) in nuclear power plant where thermal expansion mis-match can lead to de-bonding and device failure [6].…”

Section: High Temperature Piezoelectric Applicationsmentioning

confidence: 99%

High temperature measurement and characterisation of piezoelectric properties

Stevenson

Quast

Bartl

et al. 2015

J Mater Sci: Mater Electron

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Currently available high performance piezoelectric materials, predominantly based on lead zirconate titanate (PZT), are typically limited to operating temperatures of around 200 °C or below. There are many applications in sectors such as automotive, aerospace, power generation and process control, oil and gas, where reliable operation at higher temperatures is required for sensors, actuators and transducers. New materials are being actively developed to meet this need. Development and application of new and existing materials requires reliable measurement of their properties under these challenging conditions. This paper reviews the current state of the art in measurement of piezoelectric properties at high temperature, including direct and converse piezoelectric measurements and resonance techniques applied to high temperature measurements. New results are also presented on measurement of piezoelectric and thermal expansion and the effects of sample distortion on piezoelectric measurements. An investigation of the applicability of resonance measurements at high temperature is presented, and comparisons are drawn between the results of the different measurement techniques. New results on piezoelectric resonance measurements on novel high temperature piezoelectric materials, and conventional PZT materials, at temperatures up to 600 °C are presented.

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“…For this range of temperature, the polysilicon coefficient of thermal expansion (CTE) varies from 2.54 9 10 -6 to 2.91 9 10 -6°C-1 (Atre 2006). The CTE of PZT is assumed to be constant (Kallaev et al 2006).…”

Section: Thermal Effectmentioning

confidence: 99%

Effect of thermal and mechanical properties variations on microcantilever mass sensor performance

et al. 2011

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Ensuring desirable performance for piezoelectric microcantilever sensors constitutes a crucial research subject particularly for the applications such as detection of biochemical entities, virus particles or human biomarkers. However, these sensors' performance may be affected by the environmental conditions such as temperature variation, and/or the uncertainty in the material properties. The objective of this study is to explore Young modulus uncertainty of microcantilever's structural layer, thermomechanical and geometrical temperature dependency effects, on the natural frequency, bias and sensitivity of microcantilever mass sensors. These effects have been investigated for different sensor lengths and resonant modes. Also, a temperature compensation method which omits the need for bulky non-contact thermometers or fabrication of built-in temperature sensor has been proposed. As theoretical model, Euler-Bernoulli beam theory has been employed and solved by Galerkin expansion procedure. Using this model, it is demonstrated that the sensitivity of microcantilever sensor decreases with increasing the added mass. The microcantilever sensor sensitivity operating at the second resonant mode has been improved almost five times comparing to the first mode sensitivity regardless of microcantilever length. The simulation results show that temperature variation causes thermal frequency shift which in turn introduces a significant mass bias far beyond the sensors' minimum detectable mass. This mass bias is constant for a given microcantilever in its first and second resonant mode. Additionally, the effect of temperature variation on the sensitivity of the given mass sensors is negligible. However, it has been shown that the variations in sensors sensitivity due to uncertainty of Young modulus remain constant for different lengths and two resonant modes of the microcantilever sensor.

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Thermal properties of PZT-based ferroelectric ceramics

Cited by 41 publications

References 3 publications

Giant pyroelectric coefficient determined from the frequency dependence of the pyroelectric signal generated by epitaxial Pb(Zr0.2Ti0.8)O3 layers grown on single crystal SrTiO3 substrates

Giant pyroelectric coefficient determined from the frequency dependence of the pyroelectric signal generated by epitaxial Pb(Zr0.2Ti0.8)O3 layers grown on single crystal SrTiO3 substrates

High temperature measurement and characterisation of piezoelectric properties

Effect of thermal and mechanical properties variations on microcantilever mass sensor performance

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