publication . Article . 1984

Piezoelectric photoacoustic detection of first- and second-order phase transitions

S Uriarte; J. Fernández; J Etxebarria; M. J. Tello; A Gomez-Cuevas;
  • Published: 30 Dec 1984 Journal: Journal of Physics C: Solid State Physics, volume 17, pages 6,601-6,610 (issn: 0022-3719, Copyright policy)
  • Publisher: IOP Publishing
A theoretical model which accounts for the photoacoustic amplitude and phase generated at first- and second-order phase transitions in solids by using a piezoelectric detection system is proposed. This model is based on a previously published approach to the study of phase transitions by using microphonic detection systems. Measurements of the photoacoustic signal on CsCuCl3 and (N(CH3)4)2CoCl4 are presented. The results obtained are discussed in the framework of the theory.
free text keywords: General Engineering, General Physics and Astronomy, Condensed Matter Physics, Piezoelectricity, Phase transition, Microphonics, Optics, business.industry, business, Photoacoustic imaging in biomedicine, Acoustics, Signal on, Materials science, Amplitude
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