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Ab initio calculation of the solution enthalpies of substitutional and interstitial impurities in paramagnetic fcc Fe
National University of Science and Technology MISIS, Russia .
Institute Quantum Mat Science, Russia Russian Academic Science, Russia .
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 90, no 1, 014439- p.Article in journal (Refereed) Published
Abstract [en]

In the framework of disordered local moment approach by using magnetic sampling method, we suggested a model that takes into account the magnetic disorder in paramagnetic Fe with point defects. We calculate solution enthalpies of substitutional (Nb, V) and interstitial (C, N) impurities in paramagnetic face-centered cubic Fe and obtain results that are in agreement with available experimental data. It is found that both interstitial and substitutional atoms may favor the local magnetic polarization of the Fe host around the impurities by decreasing the potential energy of the system. The possibility of a formation of predominantly ferromagnetic Fe clusters around carbon in the temperature range of overcooled austenite is discussed.

Place, publisher, year, edition, pages
American Physical Society , 2014. Vol. 90, no 1, 014439- p.
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-110288DOI: 10.1103/PhysRevB.90.014439ISI: 000339973900002OAI: diva2:744024

Funding Agencies|Russian Federation Ministry for Science and Education [14.Y26.31.0005]; Swedish Foundation for Strategic Research, program Succesful Research Leader [744 10-0026]; Russian Foundation for Basic Researches [13-02-00-606a]

Available from: 2014-09-05 Created: 2014-09-05 Last updated: 2014-09-09

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Abrikosov, Igor
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