Role of metal and amino acid on the growth and microhardness properties of tartaric acid crystals

Abstract

The impact of barium metal ion and L-Alanine on the mechanical properties of well known non linear optical crystal of L-Tartrate was carried out. Barium L-Tartrate and L-Alanine Tartrate single crystals were grown by slow evaporation technique. Mechanical strength of the crystals was carried out using Vicker's microhardness tester. Vicker's micro hardness number and indentation values are driven from the test. Mechanical parameters of these two crystals are carried out from the micro hardness values. Various mechanical constants such as fracture toughness, brittleness index, yield strength, stiffness constants are calculated for both Barium L-Tartarate and L-Alanine Tartarate single crystals. The role of amino acid and metal ion on the Vicker's micro hardness in the above said crystals are analyzed in detail.