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Dynamic stabilization of cubic AuZn
Uppsala University, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. CALTECH, CA 91125 USA.
Los Alamos National Lab, NM 87545 USA.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.
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2015 (English)In: MATERIALS TODAY-PROCEEDINGS, ELSEVIER SCIENCE BV , 2015, Vol. 2, 569-572 p.Conference paper, Published paper (Refereed)
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Abstract [en]

A recently developed temperature-dependent effective potential method is employed to study the martensitic phase transformation in AuZn. This method is based on ab initio molecular dynamics and allows to obtain finite-temperature lattice vibrational properties. We show that the transversal acoustic TA(2)[110] mode associated with the phase transition is stabilized at 300 K. Temperature evolution of single-phonon dynamic structure factor at the wave vector q= 1/3[1,1,0], associated with phonon softening and Fermi surface nesting, was also studied. (C) 2015 The Authors. Published by Elsevier Ltd.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2015. Vol. 2, 569-572 p.
Keyword [en]
Lattice dynamics; anharmonicity; shape-memory alloys
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-126282DOI: 10.1016/j.matpr.2015.07.349ISI: 000371032100019OAI: oai:DiVA.org:liu-126282DiVA: diva2:913370
Conference
14th International Conference on Martensitic Transformations (ICOMAT)
Available from: 2016-03-21 Created: 2016-03-21 Last updated: 2016-04-05

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