Abstract
In the ground state (at absolute zero temperature), atoms are bound together with a certain amount of cohesive energy. If electrical, magnetic, optical, or mechanical perturbations, or heat is introduced, the system will be forced out of the ground state and brought into a state of higher energy. In this chapter we discuss how the thermal energy of Fe increases with increasing temperature and how, at the same time, the binding energy decreases, by examining the nature and the energetics of the excitations that occur during heating. This analysis provides as a basis for the understanding of the stability of the various crystallographic states of Fe and for the understanding of the physical properties in each of these states.
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Pepperhoff, W., Acet, M. (2001). Thermal properties. In: Constitution and Magnetism of Iron and its Alloys. Engineering Materials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04345-5_3
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DOI: https://doi.org/10.1007/978-3-662-04345-5_3
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