Physics · Statistical Mechanics
A binary alloy consists of NA A-type and NB B-type atoms on a simple cubic lattice. Nearby neighbors interact with attractive energy -J (J > 0) between like pairs (AA or BB) and repulsive energy +J between unlike pairs (AB). If N is the total number of sites, the average energy of the system at high temperature (kBT ≫ J) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-3J(NA - NB)
- 23J (NA + NB)2N
- 33JN
- 4-3J (NA - NB)2N✓
Correct answer
-3J (NA - NB)2N
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