Effect of amino acid additives on crystal growth parameters and properties of ammonium dihydrogen orthophosphate crystals

Dhanaraj, P.V.; Bhagavannarayana, G.; Rajesh, N.P.

doi:10.1016/j.matchemphys.2008.06.003

Cited by 46 publications

(24 citation statements)

References 24 publications

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“…This situation is avoided in this method. A larger volume of ADP crystals added with dopants can be grown by slow cooling along with seed rotation method [33]. In this method large quantity of solution in large container is normally used and only a small fraction of the solute is converted into a bulk single crystal.…”

Section: Growth Ratementioning

confidence: 99%

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Growth of dl-malic acid-doped ammonium dihydrogen phosphate crystal and its characterization

Rajesh¹,

Ramasamy²

2009

Journal of Crystal Growth

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Section: Growth Ratementioning

confidence: 99%

“…Such an effect seems to be caused by the adsorption of the organic molecules and the decrease of the surface energy of the growth steps resulting in the rise of the growth rate. Dhanaraj et al [33] reported that the presence of L-arginine monohydrochloride (LAHCl) and Lanaline enhance the growth rate of ADP single crystals.…”

Section: Growth Ratementioning

confidence: 99%

Growth of dl-malic acid-doped ammonium dihydrogen phosphate crystal and its characterization

Rajesh¹,

Ramasamy²

2009

Journal of Crystal Growth

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“…The growth promoting effect is observed in the presence of organic additives. In recent years, efforts have been taken to improve the quality, growth rate and properties of ADP, by employing new growth techniques, and also by the addition of organic, inorganic and semiorganic impurities [11][12][13][14]. In the light of the research work being done on ADP crystals, to improve the properties, the present work focuses on boron as a dopant in ADP and this is expected to enhance the nonlinearity of the crystal.…”

Section: Introductionmentioning

confidence: 99%

Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate

Zion¹,

Devarajan²,

Arunachalam³

2013

JCPT

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Single crystals of pure and boron doped ammonium dihydrogen phosphate were grown from aqueous solution by slow solvent evaporation process. ICP studies were done to confirm the presence of the dopant boron in the parent crystal. The values of the lattice parameters were determined by single crystal X-ray diffraction. The pure and doped ADP crystals were found to have tetragonal structure. Complete optical characterizations of the crystals were done using the FTIR, UV-Vis and NLO studies. The presences of the various functional groups in the crystals were identified by FTIR spectrum. The band gap energies of the pure and doped crystals have been calculated at their cut off frequencies using the UV-Vis spectrum. The second harmonic generation efficiency of the crystals was determined. The electric properties of the grown crystal have been analyzed by studying the variation of dielectric constant and dielectric loss with frequency.

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“…, the apparent hardness is independent of the applied load P. However, analysis of the experimental data on a variety of materials reveals [11,18] that always m < 1 and K 2 ≠ K. Since K 2 is load-dependent, in case when m < 1 the IIC model cannot be used to obtain load-independent hardness. In fact, Eq.…”

mentioning

confidence: 99%

Review: Indentation size effect, indentation cracks and microhardness measurement of brittle crystalline solids – some basic concepts and trends

Sangwal¹

2009

Cryst. Res. Technol.

124

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Indentation size effect, indentation cracks and microhardness measurement of some brittle crystals are reviewed against the background of the existing concepts of indentation deformation of crystalline solids. Several approaches reported in the literature devoted to relationships between applied indentation test load P and indentation diagonal length d are applied to analyze the experimentally observed normal and reverse indentation size effect (ISE) in brittle compounds. Using typical examples of normal and reverse ISE it is shown that the indentation induced cracking model does not give load-independent hardness and the final expression describing the experimental data for various compounds is essentially another form of the Meyer law. Analysis of experiment data on crack lengths and indentation diagonals for different indentation loads suggests that the origin of ISE is associated with the processes of formation of indentation cracks following the general concepts of fracture mechanics. The load-independent hardness H 0 may be determined reliably from plots of P/d against d of the proportional resistance model or of H V against 1/d as predicted by strain gradient plasticity theories. It was found that the load-independent hardness of depends on crystal orientation and state of the indented surface. Finally, some comments on determination of fracture toughness and brittle index of crystals are made. Dedicated to Prof. Wolfgang Neumann on the occasion of his 65th birthday

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Effect of amino acid additives on crystal growth parameters and properties of ammonium dihydrogen orthophosphate crystals

Cited by 46 publications

References 24 publications

Growth of dl-malic acid-doped ammonium dihydrogen phosphate crystal and its characterization

Growth of dl-malic acid-doped ammonium dihydrogen phosphate crystal and its characterization

Dielectric and Optical Characterization of Boron Doped Ammonium Dihydrogen Phosphate

Review: Indentation size effect, indentation cracks and microhardness measurement of brittle crystalline solids – some basic concepts and trends

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