Does the APF depend on the temperature

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SUMMARY

The atomic packing factor (APF) does depend on temperature, particularly due to changes in crystal structure and atomic volume. While the APF is influenced by the arrangement of atoms within a unit cell, it is not limited to metals; nonmetals can also exhibit changes in APF with temperature variations. For example, the transition between diamond and graphite demonstrates that APF can vary with temperature in nonmetallic materials. Thus, both metals and nonmetals can experience alterations in their APF as temperature affects their atomic arrangements.

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  • Understanding of atomic packing factor (APF)
  • Knowledge of crystal structures, including face-centered cubic (FCC) and hexagonal close-packed (HCP)
  • Familiarity with temperature effects on materials
  • Basic concepts of solid-state physics
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  • Research the APF for various crystal structures, including FCC and HCP
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Dell
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does the APF depend on the temperature
a) yes
b) no
c) only for metals
d) only for ceramics

i know that for iron for example the bravias lattice can change at different temperatures, but does the atomic packing factor also, i would think yes, but is this true for all materials or just metals?
 
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How is the APF defined? What characteristics of a material does it incorporate? Could these characteristics change slowly (or hint: suddenly) with temperature?
 
i would think so, if it is the volume of the atoms/ volume of the cube, and the lattice changes i would think that the APF would too, but i know this can happen in metals, but is it true for all materials or only metals
 
I don't believe the APF depends on the lattice constant, but I agree that it will change with crystal structure. And yes, crystal structure changes are possible with nonmetals also (e.g., diamond/graphite).
 
how about expansion and contraction due to temperature changes?!
 
Well, what's the APF for a hexagonal close-packed structure, for example? Does it depend on temperature, as long as the crystal arrangement is unchanged?
 

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