Laser irradiation of BaMgHPO4 crystals in silica gel media at different growth environments (nucleation reduction strategy) and its characterization studies.
The Barium magnesium hydrogen phosphate (BMHP) crystals were grown in sodium meta silicate gel media. The growth processes were done by single diffusion method and double diffusion for different physical and chemical parameters, such as using different gel densities, various concentrations of phosphoric acid and supernatant solutions. The gel pH plays an important role in the formation of different HPO(4) species in the phosphoric system. The pH range in which HPO(4)(2-) ions dominates were considered which in turn is necessary for the growth of BMHP crystals. In the present investigation, BMHP crystals optimum growth parameters were identified. The laser light exposure medium of growth gave better nucleation reduction. The grown crystals were analyzed by XRD, FTIR, TGA, SEM and etching. The results are discussed in detail.
Sundaramoorthi
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P
Department of Physics, Mahendra Engineering College, Mallasamudram (W), Namakkal, Tamil Nadu, India. sundara78@rediffmail.com
Kanchana
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G
Kalainathan
S
S
D003460:Crystallization; D004055:Differential Thermal Analysis; D004058:Diffusion; D007834:Lasers; D008855:Microscopy, Electron, Scanning; D010710:Phosphates / Q000737:chemistry*; D058428:Silica Gel; D012822:Silicon Dioxide / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013472:Sunlight; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D010710:Phosphates; D058428:Silica Gel; D012822:Silicon Dioxide