Thermodynamics of the Mg–B system: Implications for the deposition of MgB2 thin films
By Zi-kui Liu, Darrell Schlom, Qi Li, X. Xi. 2001
241 citations recorded by the source corpus.
We have studied the thermodynamics of the Mg–B system with the calculation of phase diagrams modeling technique using a computerized optimization procedure. Temperature–composition, pressure–composition, and pressure–temperature phase diagrams under different conditions are obtained. The results provide helpful insights into appropriate processing conditions for thin films of the superconducting phase, MgB2, including the identification of the pressure–temperature region for adsorption-controlled growth. Due to the high volatility of Mg, MgB2 is thermodynamically stable only under fairly high-Mg overpressures for likely growth temperatures. This places severe temperature constraints on deposition techniques employing high-vacuum conditions.
Subfields: Condensed Matter Physics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/739d86e8116950d2cb1e552b6fc04d9b5e9a9cda
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In Condensed Matter Physics
In Materials Chemistry
Citations in the corpus
- Two-band superconductor magnesium diboride (2008, background): “MgB2 melts congruently only under pressure higher than 65 bar at the temperature of 2430 ◦C [73], making growth of”