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Landau theory for the phase transitions of interstitial hydrogen in strained vanadium
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 1, 014207- p.Article in journal (Refereed) Published
Abstract [en]

A special version of the Landau theory of phase transitions has been developed, capturing the order-disorder phase transition in the bulk and elastically strained vanadium-hydrogen system. The equations for the solubility isotherms are obtained and the influence of biaxial strain on the critical temperature is determined. The critical temperature is found to change exponentially with strain. The calculated solubility isotherms agree well with experimental data for temperatures below, as well as above, the critical temperature. The influence of elastic strain on the solubility isotherm is analyzed and noticeable deviations from Sieverts' law, even at the extremely low concentrations, are obtained.

Place, publisher, year, edition, pages
2014. Vol. 89, no 1, 014207- p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-221916DOI: 10.1103/PhysRevB.89.014207ISI: 000332334400002OAI: oai:DiVA.org:uu-221916DiVA: diva2:710485
Available from: 2014-04-07 Created: 2014-04-07 Last updated: 2017-12-05Bibliographically approved

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Hjörvarsson, BjörgvinWolff, Max

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