Results 171 to 180 of about 590,000 (215)
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Protonic conduction in totally deuterated ammonium dihydrogen phosphate
Journal of Solid State Chemistry, 1976Abstract The conductivity of deuterated ammonium dihydrogen phosphate single crystals was measured as a function of temperature. Crystals doped with deuterated NH4HSO4 were also studied. The results parallel those for NH4H2PO4 to the extent that defects in the hydrogen-bond network give rise to the conductivity.
Charles T. Perrino, Robert C. Bush
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Journal of Colloid Science, 1959
Abstract Carbon replicas of fracture surfaces of ammonium dihydrogen phosphate and ammonium dihydrogen arsenate crystals grown from solutions containing chromic, ferric, or stannic ions reveal certain growth features not found in the pure crystals. In some areas a water-insoluble residue is found at the surface.
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Abstract Carbon replicas of fracture surfaces of ammonium dihydrogen phosphate and ammonium dihydrogen arsenate crystals grown from solutions containing chromic, ferric, or stannic ions reveal certain growth features not found in the pure crystals. In some areas a water-insoluble residue is found at the surface.
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Conduction in Single Crystals of Ammonium Dihydrogen Phosphate
Journal of Applied Physics, 1964Measurements of the temperature dependence of the conductivity of single crystals of ammonium dihydrogen phosphate are described. Impurities introduced in known amounts as substituents in the lattice enable the activation energy for mobility to be separated from the total energy in the Boltzmann factor for conduction.
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Raman study of rubidium-ammonium dihydrogen phosphate glasses
Journal de Chimie Physique, 1985Mixed crystals of [math] form an excellent model for structural glasses. Their properties, and the evidence for the low-temperature glass state, are reviewed. The Raman spectroscopy of this system is explored with particular attention to aspects relevant to the glass formation.
E. Courtens, H. Vogt
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Physical Review B, 1970
A complete theoretical and experimental analysis of the Maker fringes leads to the determination of accurate relative nonlinear optical susceptibilities in Si${\mathrm{O}}_{2}$, ${\mathrm{NH}}_{4}$${\mathrm{H}}_{2}$P${\mathrm{O}}_{4}$, and K${\mathrm{H}}_{2}$P${\mathrm{O}}_{4}$: ${{d}_{11}}^{2\ensuremath{\omega}}(\mathrm{Si}{\mathrm{O}}_{2})=(0.77 ...
J. Jerphagnon, S. K. Kurtz
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A complete theoretical and experimental analysis of the Maker fringes leads to the determination of accurate relative nonlinear optical susceptibilities in Si${\mathrm{O}}_{2}$, ${\mathrm{NH}}_{4}$${\mathrm{H}}_{2}$P${\mathrm{O}}_{4}$, and K${\mathrm{H}}_{2}$P${\mathrm{O}}_{4}$: ${{d}_{11}}^{2\ensuremath{\omega}}(\mathrm{Si}{\mathrm{O}}_{2})=(0.77 ...
J. Jerphagnon, S. K. Kurtz
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Fractographic study of an ammonium dihydrogen phosphate single crystal
Acta Crystallographica, 1949The technique of fractography is applied to the cleavage surfaces of an ammonium dihydrogen phosphate synthetic single crystal, using both dark-field and oblique illumination. Excellent hackle patterns are observed; and other markings are also found which relate to crystallographic deformation mechanisms and to crystal imperfection.
C. A. Zapffe, C. O. Worden
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Growth kinetics of ammonium‐ and potassium‐dihydrogen phosphate crystals
Journal of Applied Chemistry, 1967AbstractGrowth rates of ammonium‐ and potassium‐dihydrogen phosphate crystal faces have been measured in a simple laboratory apparatus under carefully controlled conditions of temperature, supersaturation and solution velocity. The growth process, which was found to be second‐order with respect to the supersaturation, is considered to be controlled by ...
J. W. Mullin, A. Amatavivadhana
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Direct current conduction in ammonium and potassium dihydrogen phosphate
The Journal of Chemical Physics, 1973Experiment, plus critical discussion of previous work, suggests the following. Conductivity is primarily due to the migration of L defects (proton vacancies), the enthalpy for L-defect mobility being 0.53 eV in KDP and 0.46 eV in ADP. Such L defects are produced by impurities, but there is an additional tendency towards incipient decomposition in both ...
L. B. Harris, G. J. Vella
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Journal of Crystal Growth, 1994
Abstract Our investigations on the growth of the mixed crystals of L-arginine phosphate sulphate and ammonium dihydrogen phosphate/potassium dihydrogen phosphate (ADP/KDP) are presented. The structural, mechanical, electrical and optical properties of L-arginine phosphate (LAP) and L-arginine phosphate sulphate (LAPS) crystals are discussed. Pure and
G. Ravi +3 more
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Abstract Our investigations on the growth of the mixed crystals of L-arginine phosphate sulphate and ammonium dihydrogen phosphate/potassium dihydrogen phosphate (ADP/KDP) are presented. The structural, mechanical, electrical and optical properties of L-arginine phosphate (LAP) and L-arginine phosphate sulphate (LAPS) crystals are discussed. Pure and
G. Ravi +3 more
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Hybrid organic–inorganic crystals based on ammonium dihydrogen phosphate and ammonium salicylate
Journal of Crystal Growth, 2011Abstract ADP–NH 4 Sal hybrid crystals are grown from aqueous solutions. The influence of the acidity of the mixed solution on the conditions of co-crystallization of the components is studied. The spectral and scintillation characteristics are determined.
A.P. Voronov +5 more
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