Study of the relative growth rate, the anisotropy of electrical resistivity and anomalous photocurrent behavior of the unidirectional grown Rochelle salt crystals

Abstract

This research article compares the growth rate along the directions [100], [010], and [001] of Rochelle salt crystals grown using the Sankaranarayanan–Ramasamy method, reports its electrical resistivity near its two Curie temperatures along the directions [100], [010], [001], [110], [011], and [101], presents the evaluated activation energy in the paraelectric and ferroelectric phases of the crystal, points out the change in the value of activation energy at Curie temperatures of the crystal, displays the anomalous behavior of the photocurrent along the polarization direction [100] of the crystal around the two Curie temperatures, and discusses the photo-stimulated shifts of the Curie temperatures.

Keywords:

• Crystal growth
• ferroelectrics
• electrical resistivity
• photocurrent
• phase transitions

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Correction

Acknowledgments

The corresponding author S. Singaravadivelu records his gratitude to the SSN management, Prof. S. Salivahanan – the Principal, Prof. P. Ramasamy – the Dean of Research, Prof. A. Rajalakshmi – HOD of Physics of SSN College of Engineering for the continuous encouragement to do research. Also, he pays his heartfelt thanks to Prof. T. Sakthi Murugesan – HOD of Physics, Presidency College, Chennai for his blessings.

This article was originally published with errors, which have now been corrected in the online version. Please see Correction (http://dx.doi.org/10.1080/00150193.2019.1694331)