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Ultrasonic, XRD and Micro-Hardness Studies on Single Crystal of Aluminum Ammonium Sulfate (AAS)


Affiliations
1 Department of Physics, RKM Vivekananda College, Mylapore, Chennai-600004, India
2 Department of Physics, D.G. Vaishnav College, Chennai-600106, India
3 Department of Physics, Urumu Dhanalakshmi College, Trichy, Tiruchirappalli-620019, India
 

Single crystal of aluminum ammonium sulfate has been grown. Crystals are subjected to X-ray diffraction analysis and Acoustical studies. Acoustical studies are made before and after crystal growth formation. Acoustical parameters like acoustical impedance (Z), free length (Lf), compressibility (β), relaxation time (τ), attenuation (α), coefficient of absorption (α/f2) are determined from velocity, density and viscosity measurements. The crystal is formed at 0.453 gm/ml and interesting changes in physical and chemical properties takes place. The smaller value of Hardness refers to soft crystal. Surface morphology of the crystal grown was studied by scanning electron microscope (SEM). From the observation of fluorescence spectra the luminescence properties of planar single crystal of AAS is studied. XRD studies confirm crystal belongs to cubic system. The cell parameters are a = 24.56A°, b = 24.56A°, c = 24.56A°, α = β = γ = 90°°, volume 14815A03.

Keywords

Crystal Growth, XRD, Micro Hardness Studies, Ultrasonic Studie, Aluminum Ammonium Sulfate.
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  • Ultrasonic, XRD and Micro-Hardness Studies on Single Crystal of Aluminum Ammonium Sulfate (AAS)

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Authors

N. Dharani Rajan
Department of Physics, RKM Vivekananda College, Mylapore, Chennai-600004, India
S. Jayakumar
Department of Physics, RKM Vivekananda College, Mylapore, Chennai-600004, India
S. Krishnan
Department of Physics, RKM Vivekananda College, Mylapore, Chennai-600004, India
G. M. Rajesh
Department of Physics, RKM Vivekananda College, Mylapore, Chennai-600004, India
Sylaja
Department of Physics, D.G. Vaishnav College, Chennai-600106, India
R. Sambasivam
Department of Physics, Urumu Dhanalakshmi College, Trichy, Tiruchirappalli-620019, India

Abstract


Single crystal of aluminum ammonium sulfate has been grown. Crystals are subjected to X-ray diffraction analysis and Acoustical studies. Acoustical studies are made before and after crystal growth formation. Acoustical parameters like acoustical impedance (Z), free length (Lf), compressibility (β), relaxation time (τ), attenuation (α), coefficient of absorption (α/f2) are determined from velocity, density and viscosity measurements. The crystal is formed at 0.453 gm/ml and interesting changes in physical and chemical properties takes place. The smaller value of Hardness refers to soft crystal. Surface morphology of the crystal grown was studied by scanning electron microscope (SEM). From the observation of fluorescence spectra the luminescence properties of planar single crystal of AAS is studied. XRD studies confirm crystal belongs to cubic system. The cell parameters are a = 24.56A°, b = 24.56A°, c = 24.56A°, α = β = γ = 90°°, volume 14815A03.

Keywords


Crystal Growth, XRD, Micro Hardness Studies, Ultrasonic Studie, Aluminum Ammonium Sulfate.

References