Abstract
Dysprosium (Dy3+) doped Sr2MgSi2O7 nanocomposites (NCs) were synthesised by low temperature solution combustion technique using Aloe Vera gel as fuel. Dy3+ has been doped to Sr2MgSi2O7 with different concentrations, such as 5%, 7%, and 11%. The prepared NCs were subjected to powder X-ray diffraction (PXRD), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The crystallite size has been determined and its ordered region is plotted using an in-house mathematical program. Employing General Utility Lattice Program (GULP) and Elastic Tensor Analysis (ELATE) tool, the physico-mechanical properties of synthesised NCs were determined and the spatial variation of elastic moduli has been plotted. The 3-dimensional graphical representation of various elastic moduli has shown that the linear compressibility is isotropic, while Young's modulus (E), shear modulus (G), and Poisson's ratio (υ) are highly anisotropic. The ordered region has significantly improved for the 11% concentration due to the stability attained in the unit cell. The correlation between Dy3+ concentration and Young's modulus was also determined using Functional Data Analysis (FDA). The G/K ratio was also obtained and results suggest that the compound exhibit brittle nature. These results show that the prepared nanocomposites have got wide applications in the design and strain engineering fields.
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