Statistical moment method in studying the melting of tungsten: a comprehensive review

• Published in: The European physical journal. B, Condensed matter physics Vol. 97; no. 5
• Main Authors: Nguyen, Hoc Quang, Hoang, Ha Thai
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2024; Springer Nature B.V
• Subjects: Complex Systems; Condensed Matter Physics; Crystal defects; Fluid- and Aerodynamics; Liquid phases; Melting; Phase transitions; Physics; Physics and Astronomy; Point defects; Regular Article - Statistical and Nonlinear Physics; Solid State Physics; Transition metals; Transition points
• ISSN: 1434-6028; 1434-6036
• DOI: 10.1140/epjb/s10051-024-00687-3

The melting properties of W at high pressure regime are investigated theoretically by the statistical moment method. The two basic single-phase approaches we use are the Lindemann criterion and the Burakovsky-Preston-Silbar dislocation theory. Besides, we also propose a simple vacancy model to evaluate the influence of point defects on the melting process. The efficiency, accuracy and correlation between the above-mentioned approaches are discussed and clarified. The obtained results demonstrate that the increase in lattice defects plays an important role in promoting the melting of W as well as explaining the jump of thermodynamic quantities in the vicinity of the solid—liquid phase transition point. Our study promises to provide a more comprehensive and in-depth view of the melting mechanism in transition metals such as W. Graphical abstract Melting temperature of W at P = 0 and high-pressure melting curve of W given by SMM, AIMD, CMD, DAC and SW