Studies on the effect of L-alanine on the structural, optical and thermal properties of potassium acid phthalate crystals

被引：3

作者：

Akhtar F. ^{[1
]}

Podder J. ^{[1
]}

机构：

[1] Department of Physics, Bangladesh University of Engineering and Technology, Dhaka

来源：

Journal of Applied Sciences | 2011年 / 11卷 / 16期

关键词：

Differential thermal analysis; Energy dispersive X-ray spectroscopy; Fourier transform infra red spectroscopy; X-ray diffraction;

D O I：

10.3923/jas.2011.2974.2983

中图分类号：

学科分类号：

摘要：

Potassium acid phthalate (KAP) crystals are promising materials as good monochromator for the qualitative and quantitative X-ray analysis of light elements like Fe, Al, Mg, F, Si, etc. in a long and middle range. KAP crystal exhibits a rare blend of ionic and molecular properties and has wide application by virtue of their polar nature. KAP is a non cenrrosymmerric molecular ionic crystal. L-alanine is an efficient organic non Linear Optical (NLO) compound under the amino acid group. L-alanine doped semi organic material like KAP may be the fundamental building block to develop many complex crystals with improved NLO properties. In this paper an attempt has been made to grow large size optically transparent L-alanine doped KAP crystals by slow evaporation solution growth technique and to see the effects of L-alanine into the pure KAP crystals. The chemical composition of the grown crystals was determined by Energy Dispersive X-ray (EDX) and Fourier Transform Infrared (FTIR) Spectroscopy. The structure of pure and L-alanine doped KAP crystals have been examined by powder X-ray diffraction (XRD) study. Optical properties of the grown crystals were studied using UV-visible specrtroscopy. Using Thermogravimetry (TG) and Differential Thermal Analysis (DTA), the decomposition temperature was obtained. Powder XRD study on grown crystals showed that they belong to an orthorhombic system. The transmission in the visible region and the thermal stability of the crystal was found to increase with the doping concentration of L-alanine into the KAP crystal. Optically transparent, large size and thermally stable L-alanine doped KAP crystals were grown successfully in a laboratory for useful application in opto-electromc devices. © 2011 Asian Network for Scientific nformation.

引用

页码：2974 / 2983

页数：9

共 24 条

[1]

Aggarwal M.D., Stephens J., Batra A.K., Lai R.B., Bulk crystal growth and characterization of semiorganic nonlinear optical materials, J. Optoelectron. Adv. Mater., 5, pp. 555-562, (2003)

[2]

Begum S.A., Podder J., Influence of co-doped bimetallic impurities on the metastable zone width and induction period for nucleation of KDP from aqueous solutions, Trends Applied Sci. Res., 4, pp. 241-247, (2009)

[3]

Benedict J.B., Wallace P.M., Reid P.J., Jang S.H., Optically nonlinear single crystals of potassium hydrogen phthalate, Adv. Mater., 15, pp. 1068-1070, (2003)

[4]

Chithambaram V., Das S.J., Nambi R.A., Srinivasan K., Krishnan S., Effect of metallic dopants on potassium acid phthalate (KAP) single crystals, Physica B: Condensed Matter, 405, pp. 2605-2609, (2010)

[5]

Claude A., Vaithianathan V., Ganesh R.B., Sathyalakshmi R., Ramasamy P., Growth and characterization of novel (Ni<sup>3+</sup> Mg<sup>2+</sup>) bimetallic crystals of ammonium di hydrogen phosphate, J. Applied Sci., 6, pp. 85-89, (2006)

[6]

[7]

Dekkiche L., Naoum R., Optimal design of 90° bend in two dimensional photonic crystal waveguides, J. Applied Sci., 8, pp. 2449-2455, (2008)

[8]

Destro R., Marsh R.E., Bianchi R., A low-temperature (23 K) study of L-alamne, J. Phys. Chem., 92, pp. 966-973, (1988)

[9]

Geetha S.K., Perumal R., Moorthy Babu S., Anbarasan P.M., Habit modification and improvement in properties of potassium hydrogen phthalate (KAP) crystals doped with metal ions, Cryst. Res. Technol., 41, pp. 221-224, (2006)

[10]

Kajzar F., Lorm A., Le Moigne J., Szpunar J., Habit modification of KAP single crystals by impurities, ActaPhys. Pol. A, 87, pp. 713-1713, (1995)

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