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Elastic properties of Fe-Mn random alloys studied by ab initio calculations
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.ORCID iD: 0000-0003-2832-3293
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2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 91, no 19Article in journal (Refereed) Published
Abstract [en]

We have studied the influence of the Mn content on the elastic properties of Fe-Mn random alloys (space group of Fm (3) over barm) using ab initio calculations. The magnetic effects in Fe-Mn alloys have a strong influence on the elastic properties, even above the Neel temperature. As the Mn content is increased from 5 to 40 at. %, the C-44 elastic constant is unaffected, while C-11 and C-12 decrease. This behavior can be understood based on the magnetovolume effect which softens the lattice. Since the amplitude of local magnetic moments is less sensitive to volume conserving distortions, the softening is not present during shearing.

Place, publisher, year, edition, pages
2007. Vol. 91, no 19
Keyword [en]
cr, approximation, constants, behavior, metals
Identifiers
URN: urn:nbn:se:kth:diva-17101DOI: 10.1063/1.2807677ISI: 000250810300030Scopus ID: 2-s2.0-36049024872OAI: oai:DiVA.org:kth-17101DiVA: diva2:335144
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Vitos, Levente

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