Universality of Meyer-Neldel Compensation rule (MNCR): Case study of thermally assisted a.c. conduction after laser irradiation. (October 2018)

• Record Type: Journal Article
• Authors: Kumar, Amit; Mehta, N.
• Is Part Of: Journal of physics and chemistry of solids. Volume 121(2018)
• Page Start: 49
• Page End: 53
• Publication Date: 2018-10
• Subjects: Amorphous materials -- Laser processing -- a.c. conductivity -- Meyer-Neldel Compensation; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2018.05.008
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: In the current article, the influence of four different cw-lasers on the thermally activated a c. conduction of a novel quaternary chalcogenide glassy semiconductor Se72 Te20 Sn2 Cd6 has been reported at different audio frequencies. We have used four different laser sources of wavelengths lying in UV–Vis-IR region. The variation of a c. conductivity with temperature obeys the Arrhenius relation for all the four laser light sources. Further analysis confirms that pre-exponential factor of thermally governed a c. conduction and the activated energy involved in the phenomenon follows MNCR. It is also found that this correlation remains independent of laser wavelength. Highlights: Observed unique universality of MNCR for thermally-activated a c. conduction. Laser irradiation is used as external perturbation. MNCR remains unaffected for laser irradiation of wavelengths in UV–Vis-IR range.