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Optical properties of Ti3SiC2 and Ti4AlN3
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Condensed Matter Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Condensed Matter Theory.
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2008 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 92, no 22, 221907- p.Article in journal (Refereed) Published
Abstract [en]

The dielectric functions of the MAX phases, Ti3SiC2 and Ti4AlN3, have been determined from first principles calculations. We compared the dielectric functions and the reflectivity spectra of Ti3SiC2 and Ti4AlN3 with those of TiC and TiN. The optical spectra were analyzed by means of the electronic structure, which provides theoretical understanding of the conduction mechanism of these two phases. We found that Ti4AlN3 can be used to avoid solar heating and also increase the radiative cooling due to the increased thermal emittance as compared to TiN. Ti4AlN3 can therefore be a candidate coating material for temperature control of space vehicles.

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2008. Vol. 92, no 22, 221907- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-110058DOI: 10.1063/1.2938862ISI: 000256527900029OAI: oai:DiVA.org:uu-110058DiVA: diva2:275084
Available from: 2009-11-03 Created: 2009-11-02 Last updated: 2017-12-12Bibliographically approved

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Ahuja, Rajeev

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