Single crystals of Manganese (II)sulphate doped with basic amino acid L-Lysine were grown successfully by slow evaporation method at ambient temperature. The concentration of dopants in the mother solution was varied from 1gm to 2gm. The solubility data for all dopant concentration were determined. The semiorganic material LMnSO4 was synthesized and its structure was confirmed by powder X-ray diffraction study. Fourier transform infrared spectroscopy study confirms the incorporation of L-Lysine into MnSO4 crystal. The doped crystals are optically better and more transparent than the pure ones having wide transmission spectra lying between 190 and 1100 nm. The dopant increases the hardness value of the material and it also depends on the concentration of the dopant.The dielectric loss of the material was calculated using dieletric measurement.

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@article{sagunthalancrtam011012,
title = "Growth and Characterization of Manganese (II) Sulphate and L-Lysine doped Manganese (II) Sulphate (LMnSO4) Crystals ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "NCRTAM",
number = "1",
pages = "46 - 52",
year = "2013",
author = " P.Sagunthala, P.Yasotha, L.Vijaya ",
}