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Structural, electrical, thermal and optical properties of the nonlinear optical crystal L‐Arginine Fluoride
Author(s) -
Mohandoss R.,
Dhanuskodi S.,
Jayalakshmy M. S.,
Philip J.,
Bhagavannarayana G.
Publication year - 2012
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201200014
Subject(s) - dielectric , refractive index , materials science , band gap , evaporation , crystal (programming language) , thermal conductivity , analytical chemistry (journal) , wavelength , absorption (acoustics) , dielectric loss , single crystal , thermal , optics , chemistry , optoelectronics , crystallography , composite material , thermodynamics , physics , chromatography , computer science , programming language
Single crystals of L‐Arginine Fluoride (LAF) have been grown by the slow evaporation technique, and the crystalline perfection was studied by HRXRD. Optical absorption studies reveal the lower cut off wavelength (280 nm) and the band gap (5.1 eV). The dielectric constant and dielectric loss have been measured as a function of frequency (42 Hz–5 MHz) and temperature (307‐368K) and the activation energy is 77 μeV. The thermal transport properties such as thermal conductivity (0.88 ± 0.02 W/mK) and specific heat capacity (482±24 J/kg/K) have been estimated by the photopyroelectric technique. The nonlinear refractive index n 2 , is found to be of the order of 10 −13 cm 2 /W by the Z‐scan technique.