Growth and dielectric properties of l-arginine acetate and l-arginine oxalate single crystals

Abstract

Single crystals of l-arginine acetate (LAA) and l-arginine oxalate (LAO), potential nonlinear optical materials, have been grown from respective aqueous solutions by using the slow cooling method. X-ray diffraction measurements confirmed the material of the grown crystals. Dielectric measurements were carried out at various temperatures ranging from 40–140 °C and with various frequencies ranging from 100 Hz–1 MHz along a- and c-directions by using the parallel plate capacitor method. Results indicate an increase of AC electrical parameters with the increase of temperature. The low ε r values observed (around 4 at 40 °C) indicate that both LAA and LAO are promising low ε r value dielectric materials.