On the phase transformation of CdS to CdCO₃ by photoacoustics

A.K. Balasubramanian*, N. Sankar**, K. Ramachandran***

* Department of Physics, Sourashtra College Madurai 625004, India

** Department of Physics, Yadava College Madurai 625014, India

*** School of Physics, Madurai Kamaraj University Madurai 625021, India

Abstract

The results of Portillo et al. (Superfices y Vacío 15, 19-21, 2002) on the phase transition in CdS are analysed entirely by a different route here. With CdS single crystal taken in wafer form, photoacoustic measurements are carried out in the presence of carbon and air. Phase transformation from CdS to CdCO₃ is obtained at a temperature of 80°C which agrees well with the results of Portillo et al.

Keywords: Photoacoustic spectroscopy (PAS); CdS; Thermal diffusivity.

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Reference

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