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Seminar on. INTRODUCTION TO SOLID STATE PHYSICS. Presented By D. M. Parshuramkar Dept. Of physics, N. H. College, bramhapuri. + -. + -. + -. + -. + -. + -. + -. What is Solid State Physics ?. Explains the properties of solid materials. Demonstrate Crystallography of solids.
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Seminar on INTRODUCTION TOSOLID STATE PHYSICS Presented By D. M. Parshuramkar Dept. Of physics, N. H. College, bramhapuri
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Whatis Solid State Physics? • Explains the properties of solid materials. • Demonstrate Crystallography of solids. • Explains the properties of a collection of atomic nuclei and electrons interacting with electrostatic forces. • Formulates fundamental laws that govern the behaviour of solids.
CLASSIFICATION OF SOLIDS Crystal Structure
Crystalline Solids • Crystalline materials are solids with an atomic structure based on a regular repeated pattern. • The majority of all solids are crystalline. • More progress has been made in understanding the behaviour of crystalline solids than that of non-crystalline materials since crystalline materials are more stable. • Examples includes Most Metals, Ceramics etc.
AmorphousSolids • Amorphous Solids are made up of randomly orientated atoms, ions, or molecules that do not form defined patterns or lattice structures. • Amorphous materials have order only within a few atomic or molecular dimensions. • Amorphous materials do not have any long-range order, but they have varying degrees of short-range order. • Examples include amorphous silicon, plastics, and glasses.
Why Most Solids are Crystalline in Nature ..? • Nature always loves the Symmetry. • Symmetry measures the Stability. • Stability indicates the state with less energy. • Crystalline solids exists with less energy. • Therefore Crystalline solids are more stable.