Electrocaloric response of a ferroelectric capacitor to a periodic electric field

Starkov, A. S.; Karmanenko, S. F.; Pakhomov, O. V.; Es’kov, A. V.; Semikin, D. A.; Hagberg, J.

doi:10.1134/s1063783409070488

Cited by 22 publications

(14 citation statements)

References 9 publications

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“…This is a special challenge on which the international scientific community is focusing attention. As a variant, the electric field can be applied to the edges of each electrocaloric plate, as proposed in [10]. The elastic field can be created by the additional piezoelectric element connected to the layers.…”

Section: Introductionmentioning

confidence: 99%

Temperature Change in the Piezoelectrocaloric Element under Periodic External Fields

Starkov

Starkov²

2015

Ferroelectrics

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The paper presents the analysis of the cooling structure consisted of alternate electroand piezocaloric layers. The temperature distribution in such a system under periodic electric and elastic fields is investigated. It is demonstrated that the simultaneous application of the external forces allows to increase the temperature difference at the outer surfaces of the system in 2-3 times compared with the operation by a single force. The obtained results can be used for design and optimization of a new generation of cooling devices.

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Section: Introductionmentioning

confidence: 99%

Temperature Change in the Piezoelectrocaloric Element under Periodic External Fields

Starkov

Starkov²

2015

Ferroelectrics

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“…In order to avoid such a serious disadvantage, some solid state cooling methods using ECE excluding the necessity to use thermal switches and moving parts were discussed . For example, recently, a theoretical consideration of the effect of the periodic electric field on the ECE in the bulk linear electrocaloric element under nonequilibrium thermal conditions was performed . The bottom of the sample was kept at constant temperature T bot and the top was thermally isolated.…”

Section: Introductionmentioning

confidence: 99%

Intensive electrocaloric effect in triglycine sulfate under nonequilibrium thermal conditions and periodic electric field

Бондарев

Mikhaleva

Горев

et al. 2016

Physica Status Solidi (b)

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We present the results of both direct measurements and modeling of the intensive electrocaloric effect DT AD in ferroelectric triglycine sulfate under nonequilibrium thermal conditions and periodically varying electric field. In the narrow region around the phase transition temperature T C , a visible difference was observed between the electrocaloric responses at applying DT ON and removal DT OFF of the constant electric field: |DT ON | < |DT OFF | and |DT ON | > |DT OFF | at T < T C and T > T C , respectively. The variation of the frequency and profile of the periodic electric field at T < T C allowed one to obtain the gradual decrease in the average temperature of the top of the sample compared to the bottom kept at the constant temperature. At low frequency electric field, qualitative agreement was found between the time dependences of the measured experimentally and calculated DT values.Experimental and modeling studies of electrocaloric effect DT AD in triglycine sulfate showed that the applying/removal of a periodic electric field to/from the bulk sample decreases the average value of the waiving temperature of the top T top compared to T ¼ const of the bottom. Both frequency and duty cycle of the electric field impulses strongly affect T top .

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“…3,5,6 The introduction of Mg and Mn doping 7-10 allows controlling the dielectric characteristics of BST ferroelectric. 4,13,14 Therefore, the investigations of temperature and electrical field influence on dielectric characteristics of BST ceramics containing Mg additives present the special meaning and interest. 4,13,14 Therefore, the investigations of temperature and electrical field influence on dielectric characteristics of BST ceramics containing Mg additives present the special meaning and interest.…”

Section: Introductionmentioning

confidence: 99%

Temperature hysteresis of the capacitance dependence C(T) for ferroelectric ceramics

Дедык¹,

Pavlova²,

Karmanenko³

et al. 2011

Journal of Vacuum Science & Technology B, Nanotechnology an

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Electrocaloric response of a ferroelectric capacitor to a periodic electric field

Cited by 22 publications

References 9 publications

Temperature Change in the Piezoelectrocaloric Element under Periodic External Fields

Temperature Change in the Piezoelectrocaloric Element under Periodic External Fields

Intensive electrocaloric effect in triglycine sulfate under nonequilibrium thermal conditions and periodic electric field

Temperature hysteresis of the capacitance dependence C(T) for ferroelectric ceramics

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