Pyroelectric properties and conduction mechanism in solution grown glycine sodium nitrate single crystal

Tyagi, Nidhi; Sinha, Nidhi; Yadav, Harsh; Kumar, Binay

doi:10.1016/j.physb.2015.01.005

Cited by 11 publications

(2 citation statements)

References 29 publications

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“…The hardness depends on the degree of lattice order of crystalline material, and it is highly influenced by defects and intermolecular forces . The Vicker’s microhardness number (VHN) H v was computed using the formula H v = KP / d 2 , where K = 2 sin(136°/2), P is the indented load, and d is the average of diagonals Figure shows the variation of microhardness number with applied load for both pure and CV-doped benzophenone crystals along [001].…”

Section: Resultsmentioning

confidence: 99%

“…53 The Vicker's microhardness number (VHN) H v was computed using the formula H v = KP/d 2 , where K = 2 sin(136°/2), P is the indented load, and d is the average of diagonals. 54 Figure 12 shows the variation of microhardness number with applied load for both pure and CV-doped benzophenone crystals along [001]. The microhardness values of the CV-doped crystal are higher as compared to those of pure benzophenone crystal, which is due to the filling of the void space by dye molecules.…”

Section: Resultsmentioning

confidence: 99%

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Enhancement of Optical, Piezoelectric, and Mechanical Properties in Crystal Violet Dye-Doped Benzophenone Crystals Grown by Czochralski Technique

Yadav

Sinha

Tyagi

et al. 2015

Crystal Growth & Design

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Pure and crystal violet dye doped (0.05 M%) benzophenone single crystals have been grown by Czochralski technique. Morphology of the grown crystal was analyzed by geometrical and bond energy consideration. Structural characterizations have been performed by powder X-ray diffraction analysis. Crystalline perfections of the grown crystals were examined by high resolution X-ray diffractometry (HRXRD). From UV-Vis measurements, increased transmittance with characteristic absorption at 590 nm for CV dye was observed in doped crystal. The photoluminescence intensity has increased by the effect of dye. Dielectric study was performed with temperature at various frequency ranges. In conductivity study, the activation energy in a temperature range of 30 -44 °C for pure and doped crystals were found to be 0.24 eV and 0.22 eV at 5 KHz. The piezoelectric charge coefficient (d 33 ) for pure and dye doped crystal was improved from 1 to 3 pC N -1 along [001]. The non-linear optical characterization has shown the Abstract Pure and crystal violet dye doped (0.05 M%) benzophenone single crystals have been grown by Czochralski technique. Morphology of the grown crystal was analyzed by geometrical and bond energy consideration. Structural characterizations have been performed by powder X-ray diffraction analysis. Crystalline perfections of the grown crystals were examined by high resolution X-ray diffractometry (HRXRD). From UV-Vis measurements, increased transmittance with characteristic absorption at 590 nm for CV dye was observed in doped crystal. The photoluminescence intensity has increased by the effect of dye. Dielectric study was performed with temperature at various frequency ranges. In conductivity study, the activation energy in a temperature range of 30 -44 °C for pure and doped crystals were found to be 0.24 eV and 0.22 eV at 5 KHz. The piezoelectric charge coefficient (d 33 ) for pure and dye doped crystal was improved from 1 to 3 pC N -1 along [001]. The non-linear optical characterization has shown the increased SHG efficiency of dye doped crystal. Mechanical properties of the grown crystals have been studied experimentally by Vicker's microhardness technique and variability of the measured data was statistically analyzed by Weibull distribution. No structural changes were observed after indentation in Raman studies confirming the durability of crystal.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%