Experimental determination of metastable zone width, induction period and interfacial energy of LAP family crystals

Arunmozhi, G.; Jayavel, R.; Subramanian, C.

doi:10.1016/s0022-0248(96)01163-3

Cited by 35 publications

(15 citation statements)

References 11 publications

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“…The synthesized salt was purified by recrystallizing before the actual experiments. It is known that the solubility of LAP varies with pH of the solution [10]. Since the solution prepared by dissolving a known amount of recrystallized salt showed a pH of 5.8, a detailed study on the solubility of LAP with solution pH at 5.8 was carried out.…”

Section: Synthesis and Solubilitymentioning

confidence: 99%

“…In the earlier publication, induction period and metastable zone width and interfacial tension of LAP and sulphate substituted LAP solutions has been reported [10,11]. However to the best knowledge of the authors there is no detailed investigation on the effect of supercooling rate on the metastable zone width and the crystal growth rate studies on LAP.…”

Section: Introductionmentioning

confidence: 99%

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Metastability and crystal growth kinetics on L‐arginine phosphate

Arunmozhi¹,

Gomes

2004

Cryst. Res. Technol.

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Stability of saturated L-Arginine Phosphate (LAP) solution studied as a function of supercooling rate and crystal growth kinetics investigated as a function of supersaturation are reported in this communication. Solution stability was studied by observing the metastable zone width at different cooling rates employing a polythermal method. Analysis of the experimental data yielded the kinetic constant of nucleation and the order of nucleation. Crystal growth rates studied on small seed crystals with regular morphology, under normal growth conditions and at different supersaturation levels were found to satisfy BCF surface diffusion model. Crystal growth rates were investigated normal to the (100), (010) and (001) faces.

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Section: Synthesis and Solubilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metastability and crystal growth kinetics on L‐arginine phosphate

Arunmozhi¹,

Gomes

2004

Cryst. Res. Technol.

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“…(iii) zwitterionic nature of the molecule, which leads to high electro optic parameters and good mechanical and thermal stability of the crystals [8]. Crystals like L-arginine phosphate (LAP), L-histidine tetrafluoroborate etc are good amino acid complex crystals having excellent NLO properties which make them strong Keywords: growth from solutions; single crystal growth; nonlinear optical materials; second harmonic generation candidates to replace potassium dihydrogen phosphate (KDP), which is one of the best known inorganic NLO crystals [9][10][11][12][13][14][15]. Organic crystals have received a great deal of interest in recent years due to their extremely large optical non linearity as compared with most of the inorganic crystals that are transparent in the visible region.…”

Section: Introductionmentioning

confidence: 99%

Studies on the thermal, optical and dielectric properties of a new nonlinear optical crystal — L-citrulline oxalate grown by slow evaporation technique

Sreevalsa

Jayalekshmi

2011

Trans Indian Inst Met

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In this paper we report the thermal, optical and dielectric properties of L-citrulline oxalate (LCO) monohydrate-a new nonlinear optical (NLO) organic crystal grown from aqueous solution by slow evaporation technique. It has good thermal stability up to 165 o C. Optical transmittance of LCO is measured in the range 200-1000 nm and the crystal possesses a wide transparency region from 311nm to the far IR region. It has a band gap of 3.86eV. Hence the material is suitable for application as windows in spectral instruments in this region. The dielectric properties of the crystal have also been investigated. The dielectric constant obtained for LCO is higher at lower frequencies and then it decreases with increasing frequencies and saturates for further increase in the frequency. The second harmonic efficiency is found to be only 0.4 times that of KDP which can be improved by doping with alkali metals like lithium.

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“…Doping with optically active amino acids also affects the crystal growth of TGS and shows improvement in the ferroelectric properties [8]. Hence, to enhance the ferroelectric properties, amino acids mixed with TGSP have been investigated and reported [9] Tri glycine sulpho phosphate (TGSP) salt was synthesized from the following reaction.…”

Section: Introductionmentioning

confidence: 99%

Thermal and electrical properties of Tri Glycine Sulpho Phosphate (TGSP) and L-Asparagine doped TGSP crystals

Margaret¹,

Sankar

Kalainathan

et al. 2006

Cryst. Res. Technol.

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Tri Glycinsulphate with partial substitution of phosphoric acid, namely Tri Glycine Sulpho Phosphate (TGSP) has been grown by slow cooling method. Habit modifications have been observed with change in the concentration of ortho phosphoric acid (H 3 PO 4 ). Monoclinic structure of the grown crystals has been confirmed using X-ray diffraction analysis. TGSP crystals doped with L -Asparagine were also grown. The doping effect is qualitatively estimated using FTIR analysis. TGA, DTA studies and dielectric measurements were carried out for pure and L-Asparagine doped TGSP crystals to investigate the thermal and electrical properties of the crystals.

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Experimental determination of metastable zone width, induction period and interfacial energy of LAP family crystals

Cited by 35 publications

References 11 publications

Metastability and crystal growth kinetics on L‐arginine phosphate

Metastability and crystal growth kinetics on L‐arginine phosphate

Studies on the thermal, optical and dielectric properties of a new nonlinear optical crystal — L-citrulline oxalate grown by slow evaporation technique

Thermal and electrical properties of Tri Glycine Sulpho Phosphate (TGSP) and L-Asparagine doped TGSP crystals

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