Structural,optical and dielectric studies of novel non-linear Bisglycine Lithium Nitrate piezoelectric single crystal |
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| Affiliation: | 1. Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India;2. Department of Electronics, SGTB Khalsa College, University of Delhi, Delhi 110007, India;1. Institute of Geology and Nature Management, Far Eastern Branch of the Russian Academy of Sciences, 675000 Blagoveschensk, Amur Region, Russia;2. Amur State University, 675027 Blagoveschensk, Amur Region, Russia;3. Chemistry of Interfaces, Luleå University of Technology, S-97187 Luleå, Sweden;1. Departamento de Física, Universidad de Sonora (UNISON), Boulevard Luis Encinas y Rosales s/n, Hermosillo, Sonora 83000, Mexico;2. Departamento de Investigación en Física, Universidad de Sonora (UNISON), Boulevard Luis Encinas y Rosales s/n, Hermosillo, Sonora 83000, Mexico;3. Centro de investigación en Materiales Avanzados, S.C. Miguel de Cervantes 120, Complejo industrial Chihuahua, Chihuahua, Chihuahua 31109, Mexico;4. Centro de Investigaciones y Estudios Avanzados del IPN, Departamento de Física, P.O. Box 14-7400, México, D.F. 7000, Mexico;5. Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, P.O. Box 55-534, México, D.F. 09340, Mexico;1. Departamento de Física, Universidade Estadual de Maringá, CEP 87020-900 Maringá, PR, Brazil;2. Centro de Ciências Sociais, Saúde e Tecnológicas, Universidade Federal do Maranhão, Imperatriz, MA, Brazil;1. Department of Physics, Periyar Government Arts College, Cuddalore 607001, Tamil Nadu, India;2. Department of Physics, Government Arts College, Tiruvannamalai 606603, Tamil Nadu, India;3. Department of Physics, Arignar Anna Government Arts College, Cheyyar 604407, Tamil Nadu, India;4. Department of Physics, Pachaiyappa''s College for Men, Kanchipuram 603501, Tamil Nadu, India;1. Department of Physics, Presidency College, University of Madras, Chennai, 05, India;2. Department of Physics, The New College(Autonomous), University of Madras, Chennai, 14, India |
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| Abstract: | The novel non-linear semiorganic Bisglycine Lithium Nitrate (BGLiN) single crystals were grown by slow evaporation technique. The structural analysis revealed that it belongs to non-centrosymmetric orthorhombic structure. The presence of various functional groups in the grown crystal was confirmed by FTIR and Raman analysis. Surface morphology of the grown crystal was studied by scanning electron microscopy. The optical studies show that crystal has good transmittance (more than 80%) in the entire visible region and a wide band gap (5.17 eV). The optical constants such as extinction coefficient (K), the reflectance (R) and refractive index (n) as a function of photon energy were calculated from the optical measurements. With the help of these optical constants the electric susceptibility (χc) and both the real (εr) and imaginary (εi) parts of the dielectric constants were also calculated which are required to develop optoelectronic devices. In photoluminescence studies, a broad emission band centered at 404 nm was found in addition to a small band at 352 nm. A broad transition (from 29 to 33 °C) was observed with low dielectric constant value. A high piezoelectric charge coefficient (d33) of 14 pC/N was measured at room temperature which implies its usefulness for various sensor applications. The second harmonic generation efficiency of crystal was found to be 1.5 times to that of KDP. From thermo gravimetric analysis and differential thermal analysis, thermal stability and melting point (246 °C) were investigated. The dielectric behavior, optical characterization, piezoelectric behavior and the non-linear optical properties of the Bisglycine Lithium Nitrate single crystals were reported for the first time which established the usefulness of these crystals for various piezo- and opto-electronics applications. |
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| Keywords: | Semi-organic NLO materials Crystal growth Optical properties Piezoelectricity Dielectric studies Thermal studies |
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