ABSTRACT
One of the fundamental and the most interesting topics in engineering and science is the distinct states of the ordered and disordered materials. The absence of Long range order (LRO) is the essential aspect that differentiates an amorphous solid with its crystalline counterpart. There is no translational periodicity in amorphous solids. The unpredictability at large separations occurs in these disordered materials as signature of the absence of long-range ordering. About an atom under consideration, the atomic scale structure is extremely non-random for a small number of inter-atomic distances. In the structure of amorphous solids, the short-range order (SRO) is immensely treated as the signature of disordered state. A glass is one of the members of the family of non-crystalline solids that are synthesized by the traditional route of melt-quenching. The non-crystalline materials prepared by unusual synthesis techniques (such as sol-gel method, solid-state amorphization processes and thermal evaporation) are occasionally defined amorphous solids. Thus, it is very tough to extort any significant information about the structural units by performing the diffraction experiments on such disordered materials due to the presence of only SRO.
