Role of vibrational entropy in the stabilization of the high-temperature phases of iron

The phonon dispersions of the bcc and fcc phases of pure iron ({\alpha}-Fe, {\gamma}-Fe and {\delta}-Fe) at ambient pressure were investigated close to the respective phase transition temperatures. In the open bcc structure the transverse phonons along T1 [{\xi}{\xi}0] and T1 [{\xi}{\xi}2{\xi}] are...

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Veröffentlicht in:	arXiv.org 2014-04
Hauptverfasser:	Neuhaus, Jürgen, Leitner, Michael, Nicolaus, Karl, Petry, Winfried, Hennion, Bernard, Hiess, Arno
Format:	Artikel
Sprache:	eng
Schlagworte:	Alpha iron Eigenvectors Entropy High temperature Phase transitions Phases Phonons Physics - Materials Science Pressure Stabilization Temperature Thermodynamic properties
Online-Zugang:	Volltext
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