A new nonlinear optical semi-organic material: cadmium thiourea acetate

Studies on the Growth and Microhardness, Dielectrics and Photoconductivity of NLO Material Ammonium acid phthalate

“…By plotting the applied load vs Vicker's hardness number, the value of the work hardening coefficient of ammonium acid phthalate was found to be 2.15, which indicates that it belongs to the soft category. According to Onitsch [5] 'n' lies between 1 and 1.6 for hard materials and is greater than 1.6 for soft materials [7,6]. The 'n' value observed in the present studies is around 2.15 suggesting that the grown ammonium acid phthalate crystal is a relatively softer material.…”

Growth and Characterization of Promising Nlo Crystal: Meta Nitroaniline

“…It corresponds to a melting point. From 114°C, the DTA curve shows a series of weak endothermic peaks characterized by an important weight loss observed on the TGA curve 21 . This thermal phenomenon is attributed to the degradation of the organic entity, well confirmed by the consistent residue of the crystal at the end of the experiment.…”

Growth and Characterisation of new Semi Organic Crystal Bisthiourea Calciumacetate

“…Purely inorganic nonlinear optical (NLO) materials typically have excellent mechanical and thermal properties with relatively modest optical nonlinearities because of the lack of extended p-electron delocalization [7]. Under this circumstance, the quest for NLO materials is concentrated on a new class of materials called semiorganic crystals with high second harmonic generation (SHG) coefficients as well as stable physicochemical properties [8][9][10][11]. Due to their large nonlinearity, high resistance to laser induce damage, low angular sensitivity and good mechanical hardness, the semiorganic materials have the potentials for combing the high NLO property and chemical flexibility of organic materials with physical sturdiness and excellent transmittance of inorganic materials.…”

“…Due to their large nonlinearity, high resistance to laser induce damage, low angular sensitivity and good mechanical hardness, the semiorganic materials have the potentials for combing the high NLO property and chemical flexibility of organic materials with physical sturdiness and excellent transmittance of inorganic materials. Among the semiorganic NLO materials, metal-complexes of thiourea family have been investigated actively [12][13][14], and a variety of thiourea metal-complex crystals have been grown [15][16][17][18].With large dipole moment and centrosymmetric nature, thiourea has the ability to form a widespread network of hydrogen bonds [19], which produces excellent noncentrosymmetric complexes such as zinc thiourea sulphate (ZTS), bisthiourea cadmium acetate (BTCA), bis thiourea zinc acetate (BTZA), bisthiourea zinc chloride (BTZC), bisthiourea bismuth chloride (BTBC) and bisthiourea cadmium iodide (BTCI) [20][21][22][23][24][25][26]. Motivated by the intriguing properties of this material, an attempt has been made to synthesize and growth of thiourea crystal.…”