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LATTICE VIBRATION I - Coggle Diagram
LATTICE VIBRATION I
CRYSTAL DYNAMICS
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2.the amplitude of the motion increases as the atoms gain more thermal energy at higher temperature :
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6.Atomic motions are governed by the forces exerted on atoms when they are displayed from their equilibrium positions.
7.To calculate the forces its is necessary to determine the wave functions and energies of the electrons within the crystal.
HOOKE'S LAW
One of the properties of elasticity is that it takes about twice
as much force to stretch a spring twice as far.
The point at which the Elastic Region ends is called the inelastic limit, or the proportional limit. In actuality, these two points are not quite the same
inelastic limit
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if the force is taken off the
sample, it will not return to its original size
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LATTICE VIBRATIONS
In the approximation, the atoms are very heavy and forces between atoms are too large which prevents the atoms from moving at all.
Therefore, the atoms are in a permanent position.
As a result, the lattice point is also not moving(static)
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