Crystal defect is an imperfection in the regular geometrical arrangement of the atoms in a crystalline solid. Deformation of the solid, quick cooling from a high temperature, or high-energy radiation striking the solid cause these flaws. These defects in the solid can be found at single places, along lines, or across entire surfaces, and they affect the solid's physical, mechanical, electrical, and optical characteristics. As a result, in materials science, the temperature effects of crystal on noble metals like nickel and aluminium with planar and point defects are important. The semi empirical potential, which is based on the embedded atom method (EAM) to estimate melting point, was used to compute the energy per atom and lattice parameter. The effects of self, point defects, interstitial, and replacement have been obtained on melting point. The influence of low index (111), (112), (113), and (114) twin interfaces and twin formation energy on the melting point of Nickel and Aluminum has a high twin-forming energy with a low planar atomic density. The current twin interface results are acceptable in that all observed atomic relaxations are consistent with what a hard sphere model would predict. It has been observed that the presence of a defect (planer / point) decreases the melting point of metals in defect-free crystals with pointed melting points.
Author(S) Details
Sheheera Irfan
Department of Physics, Khwaja Fareed University of Engineering and Information Technology Rahim Yar Khan, Pakistan.
Zulfiqar Ali Shah
Department of Physics Allama Iqbal Open University, Islamabad, Pakistan.
Sidra Sabir
Department of Physics, Khwaja Fareed University of Engineering and Information Technology Rahim Yar Khan, Pakistan.
Syed Zafar Ilyas
Department of Physics Allama Iqbal Open University, Islamabad, Pakistan.
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