Crystallography: Atomic Bonding, Structures, and Diffraction

This lecture covers the physics of materials with a focus on crystallography, discussing atomic bonding types such as van der Waals, ionic, metallic, and covalent bonding. It also explains the nodes of the periodic lattice, equations of planes, Bragg diffraction, matrix math for non-orthonormal basis, X-ray diffraction, and characteristics of crystalline systems. Additionally, it delves into the coordination number, composite structures like CsCl and NaCl, and composite structures such as sphalerite and perovskite. The lecture concludes with a discussion on perovskite superconductors.