A detailed perceptive on the growth and characterization studies of para amino hippuric acid (PAHA) single crystals

• Functional groups identified by FTIR and micro-Raman.
• Optical transparency in the UV–Visible is good for NLO applications.
• TGA and DTA showed that the compound decomposes beyond.
• Dielectric and mechanical behavior reveals its physical properties.
• SHG 1.8 times greater than that of KDP.

Single crystals of para amino hippuric acid (PAHA) were grown by slow evaporation technique. The spectral and its structural properties of the crystals were studied by FT-IR, micro-Raman and factor group analysis. The optical transparency in the UV–Visible regions was found to be good for non-linear optics (NLO) applications. Thermogravimetric analysis (TGA) and Differential Thermal Analysis (DTA) showed that the compound decomposes beyond 300 °C. The dielectric behavior of the compound predicts low dielectric loss at high frequency applied whereas in the case of mechanical behavior of the specimen hardness increases with increasing applied load. After certain weight increase, hardness gets saturated in the region of ⩾110. Relative second harmonic efficiency of the compound is found to be 1.8 times greater than that of potassium di-phosphate reference.

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