Determination of the Metastable Zone Width, Nucleation Kinetics, Structural and Optical Properties of KCl Doped KAP Crystal


Slow evaporation method was used to grow pure and KCl (10 mol%) doped KAP single crystal. The solubility and metastable zone width of aqueous solutions of pure and KCl (10 mol%) doped KAP crystal were evaluated to analyze the crystallization process. Measuring the induction period τ, the critical nucleation parameters like interfacial energy (σ), energy of formation of the critical nucleus (ΔG*) were determined using the classical theory of nucleation. The structural properties and optical constants of the grown crystals have been put to test and observed that the addition of KCl results in an enhancement of properties of the crystal. Grown crystals were characterized by powder X-ray diffraction. FTIR spectra confirmed the presence of KCl in pure KAP crystal. UV- Visible spectroscopic studies revealed that addition of KCl in pure KAP crystal increased transparency from 75% to 80%. The analysis of the optical absorption data revealed the presence of both indirect and direct transitions and both of these band gaps increased with the addition of KCl. The transmittance data was analyzed to calculate the refractive index, oscillator energy, dispersion energy, electric susceptibility, zero-frequency dielectric constant and both the real and imaginary parts of the dielectric permittivity as a function of photon energy. The moments of ε(E) were also determined. The dispersion i.e. spectral dependence of the refractive index was discussed according to the single-effective oscillator model proposed by Wemple and DiDomenico.

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Rahman, M. and Rahman, M. (2015) Determination of the Metastable Zone Width, Nucleation Kinetics, Structural and Optical Properties of KCl Doped KAP Crystal. Journal of Crystallization Process and Technology, 5, 31-42. doi: 10.4236/jcpt.2015.52005.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Samavat, F., Ali, E.H., Solgi, S. and Taravati Ahmad, P. (2012) KCl Single Crystals Growth with Mn, Ag and In Impurities by Czochralski Method and Study of Impurities Influence on Their Properties. Open Journal of Physical Chemistry, 2, 185-188.
[2] Joseph, J., Mathew, V. and Abraham, K. E. (2008) Electro-Optical, Optical and Structural Properties of Mn Doped Potassium Chloride Crystals Prepared by a Mini Melt Growth Setup. Journal of Physics, 35, 198-212.
[3] Ulrich, J. and Strege, C. (2002) Some Aspects of the Importance of Metastable Zone Width and Nucleation in Industrial Crystallizers. Journal of Crystal Growth, 237-239, 2130-2135.
[4] Tilley, R. (2006) Crystals and Crystal Structure. John Wiley & Sons Ltd., England.
[5] Rahman, A. and Podder, J. (2010) Effect of EDTA on the Growth Kinetics and Structural and Optical Properties of KDP Crystal. International Journal of Optics, 2010, Article ID: 978763.
[6] Zaitseva, N.P., Rashkovich, L.N. and Bogatyreva, S.V. (1995) Stability of KH2PO4 and K(H,D)2PO4 Solutions at Fast Crystal Growth Rates. Journal of Crystal Growth, 148, 276-282.
[7] Podder, J. (2002) The Study of Impurities Effect on the Growth and Nucleation Kinetics of Potassium Dihydrogen Phosphate. Journal of Crystal Growth, 237-239, 70-75.
[8] Rahman, A. and Podder, J. (2012) Effect of EDTA on the Metastable Zone Width and Growth Kinetics of ADP Crystal. Indian Journal of Physics, 86, 15-21.
[9] Jothi Mani, R. and Selvarajan, P. (2014) Nucleation Kinetics, Growth, Nlo Studies, Hardness Parameters and Etching Analysis of Phosphoric Acid Added L-Alanine Single Crystals (Pla). International Journal of ChemTech Research, 6, 4702-4708.
[10] Kanagasekaran, T., Gunasekaran, M., Srinivasan, P., Jayaraman, D., Gopalakrishnan, R. and Ramasamy, P. (2005) Studies on Growth, Induction Period, Interfacial Energy and Metastable Zone Width of m-Nitroaniline. Crystal Research and Technology, 40, 1128-1133.
[11] Uthayarani, K., Sankar, R. and Shashidharan Nair, C.K. (2008) Growth, Spectral and Thermal Properties of KAP Single Crystals in the Presence of DL-Alanine and L-Methionine Amino Acid Dopants. Crystal Research and Technology, 43, 733-739.
[12] Thendral, V., Thayumanavan, A., Pasupathi, G. and Marudhu, G. (2013) Enhancement of Optical, Thermal and Mechanical Properties of Kap Crystals by Magnesium Doping. IOSR Journal of Applied Physics, 3, 62-68.
[13] Fox, M. (2001) Condensed Matter Physics, Oxford Master Series, 64.
[14] Kusuma, H.H., Saidin, M.K. and Ibrahim, Z. (2009) Optical Properties of Ti:Al2O3 Single Crystal. Jabatan Fizk UTM, 4, 42-49.
[15] Vasudevan, P., Sankar, S. and Jayaraman, D. (2013) Synthesis, Optical and Electrical Studies of Nonlinear Optical Crystal: L-Arginine Semi-Oxalate. Bulletin of the Korean Chemical Society, 34, 128-132.
[16] Victor Antony Raj, M., Anand, D.P. and Madhavan, J. (2013) Linear and Non Linear Optical Properties of L-Alani- nium Malate (LAM) Single Crystal an Efficient Organic NLO Material. Sciencia Acta Xaveriana, 4, 41-50.
[17] Wemple, S.H. (1973) Refractive-Index Behavior of Amorphous Semiconductors and Glasses. Physical Review B, 7, 3767.
[18] Tanaka, K. (1980) Optical Properties and Photoinduced Changes in Amorphous AsxS100-x. Films. Thin Solid Films, 66, 271-279.
[19] Yakuphanoglu, F., Cukurovali, A. and Yilmaz, I. (2004) Determination and Analysis of the Dispersive Optical Constants of Some Organic Thin Films. Physica B: Condensed Matter, 351, 53-58.

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