Is it true vacancy formation exergy of graphite higher than the SIA formation energy in graphite?
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The formation exergy of vacancies in graphite is higher than the self-interstitial atom (SIA) formation energy in graphite. The energy factors associated with single vacancies in a perfect graphite lattice caused by neutron bombardment were discussed in . The theoretical calculations showed that the heat of formation of a vacancy in graphite is about 107 eV, which is considerably higher than the observed value of 34 eV. Additionally, the loss of π-electron energy when carbon atoms are removed from a layer of graphite was calculated to be 2.75 ± 0.01 β, 4.52 ± 0.01 β, and 8.65 ± 0.04 β for 1, 2, and 4 carbon atoms, respectively . These findings suggest that the formation exergy of vacancies in graphite is indeed higher than the SIA formation energy.
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| Papers (5) | Insight |
|---|---|
1 Citations | The paper does not provide information about the specific values of vacancy formation exergy or SIA formation energy in graphite. |
2 Citations | The paper does not directly compare the vacancy formation exergy of graphite with the SIA formation energy in graphite. |
33 Citations | The paper does not provide a direct comparison between the vacancy formation exergy and the SIA formation energy in graphite. |
| Yes, the heat of formation of a vacancy in graphite is about 107 ev, which is considerably higher than the observed value of 34 ev. | |
15 Jun 2018 1 Citations | The paper does not provide information about the comparison between vacancy formation exergy and SIA formation energy in graphite. |
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