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Optical, mechanical and thermal behaviors of Nitrilotriacetic acid single crystal

B. Deepa

PG and Research Department of Physics, AVVM Sri Pushpam College, Poondi, Thanjavur, India

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and

P. Philominathan

PG and Research Department of Physics, AVVM Sri Pushpam College, Poondi, Thanjavur, India

E-mail Address: philominathan@gmail.com

Corresponding author.

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https://doi.org/10.1142/S0217979217502009Cited by:3 (Source: Crossref)

Abstract

An organic nonlinear single crystal of Nitrilotriacetic acid (NTAA) was grown for the first time by employing a simple slow evaporation technique. Single crystal X-ray diffraction (XRD) analysis reveals that the grown crystal belongs to the monoclinic system with noncentrosymmetric space group $C_{C}$ $C_{C}$ . Fourier transform infrared (FTIR) spectral study ascertains the presence of functional groups in NTAA. The molecular structure of the grown crystal was confirmed by Nuclear Magnetic Resonance (NMR) spectral analysis. The optical parameters such as transmittance, absorption coefficient and band gap were calculated from UV–Visible and fluorescence studies. Dielectric measurements were carried out for different frequency and temperature. The mechanical strength of the grown crystal was measured using Vickers microhardness test. The high thermal stability and the melting point of the grown crystal were also estimated using thermogravimetric (TGA) and differential thermal analyses (DTA). The confirmation of the grown crystals belonging to nonlinear optical crystals was performed by Kurtz–Perry technique and found as suitable candidate for optoelectronics applications.

Keywords:

PACS: 42.65k, 42.70a, 42.70Mp, 61.05c

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