• J. Saravana Kumar
• V.S. John
• P. SujaPremaRajini

A nonlinear optical crystal – Potassium Nitrate KNO3 was grown by slow evaporation of solution growth method in different Molar concentrations and their optical and mechanical properties were studied. The optical properties were studied by means of transmission and reflectance in the wavelength region 200–1200 nm. The optical transparency and lower cut off value of UV transmission were ascertained by recorded UV-Visible spectrum. Optical band gap of the crystals were found to be more than 3.5 eV. Functional groups of the grown crystals were identified through FTIR spectroscopy. Mechanical property of the grown KNO3 crystals was studied by Vickers micro hardness tester by varying the mass of the load.

Potassium nitrate, UV – Vis NIR, Optical band gap, FTIR Analysis, Microhardness

"Optical and Mechnical Studies of Potassium Nitrate (KNO3) single crystal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.549-556, January-2019, Available :http://www.jetir.org/papers/JETIR1901468.pdf

"Optical and Mechnical Studies of Potassium Nitrate (KNO3) single crystal", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp549-556, January-2019, Available at : http://www.jetir.org/papers/JETIR1901468.pdf