Photothermoelectric (PTE) versus photopyroelectric (PPE) detection of phase transitions - Archive ouverte HAL Access content directly
Journal Articles International Journal of Thermophysics Year : 2016

Photothermoelectric (PTE) versus photopyroelectric (PPE) detection of phase transitions

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Abstract

The photopyroelectric (PPE) technique is one of the photothermal (PT) methods mostly used for phase transitions investigations. In this paper, we want to compare the PPE results with those obtained using another, recently developed PT method [the photothermoelectric (PTE) calorimetry] for the same purpose of detecting phase transitions. The well-known ferro-paraelectric phase transition of TGS, taking place at a convenient temperature (about 49°C), has been selected for demonstration. A comparison of the two PPE and PTE methods, both in the back detection configuration (in the special case of optically opaque sample and thermally thick regime for both sensors and sample) shows that they are equally suitable for phase transitions detection. Performing a proper calibration, the amplitude and phase of the signals can be used in order to obtain the critical behaviour of all sample’s static and dynamic thermal parameters. © Springer Science+Business Media New York 2016.
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Dates and versions

hal-02184749 , version 1 (16-07-2019)

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Cite

D. Dadarlat, C. Tudoran, E. Guilmeau, A.H. Sahraoui, V. Surducan, et al.. Photothermoelectric (PTE) versus photopyroelectric (PPE) detection of phase transitions. International Journal of Thermophysics, 2016, 37 (5), pp.53. ⟨10.1007/s10765-016-2059-8⟩. ⟨hal-02184749⟩
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