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Simultaneous measurement of thermal properties in ferroelectric crystals

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Abstract

Simultaneous measurement of the influence of the electric field on specific heat, thermal conductivity and pyroelectric coefficient is described as a summary of previous papers. From these coefficients, which are determined by means of a flux calorimeter, the behaviour of other properties, such as thermal diffusivity and electrocaloric coefficient, is deduced.

The data are compared with the findings obtained by other authors with traditional methods.

Zusammenfassung

In Zusammenfassung vorhergehender Arbeiten wurde die simultane Messung des Einflusses von elektrischen Feldern auf spezifische Wärme, Wärmeleitfähigkeit und pyroelektrischen Koeffizienten beschrieben. Auf Grundlage dieser Konstanten, die mittels eines Fluxkalorimeters bestimmt wurden, konnte das Verhalten anderer Eigenschaften wie z. B. thermische Diffusionskonstante und elektrokalorischer Koeffizient abgeleitet werden. Die Daten wurden mit durch herkömmliche Methoden erhaltenen Ergebnissen anderer Autoren verglichen.

Резюме

Описано одновременн ое измерения влияния электрического поля на теплоемкость, удельную теплопрово дность и пироэлектри ческий коэффициент ферроэл ектриков. На основе полученных величин, о пределенных с помощь ю калориметра в потоке, были установлены и такие параметры, как т ермопроводимость и электротепловой коэ ффициент. Данные были сопоставлены с данны ми других авторов, пол ученными обычными методами.

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This work has been supported by the Spanish C.A.I.C. y T.

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del Cerro, J. Simultaneous measurement of thermal properties in ferroelectric crystals. Journal of Thermal Analysis 34, 335–344 (1988). https://doi.org/10.1007/BF01913401

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  • DOI: https://doi.org/10.1007/BF01913401

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