Local chemical bonding and structural properties in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ti</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi>Al</mml:mi><mml:msub><mml:mi mathvariant="normal">C</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> MAX phase and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ti</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">C</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>T</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math> MXene probed by Ti <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>1</mml:mn><mml:mi>s</mml:mi></mml:mrow></mml:math> x-ray absorption spectroscopy
Martin Magnuson, Lars-Åke Näslund
Abstract
The authors investigate the MAX phase material Ti${}_{3}$AlC${}_{2}$ and the corresponding MXene material Ti${}_{3}$C${}_{2}$T${}_{x}$, where the latter was examined before and after a series of heat treatments. The Ti-C bond lengths in the Ti${}_{3}$C${}_{2}$-layers are altered when the stronger interacting F and O in Ti${}_{3}$C${}_{2}$T${}_{x}$ replace the Al-monolayer in Ti${}_{3}$AlC${}_{2}$ and an additional heat treatment to 750 \ifmmode^\circ\else\textdegree\fi{}C changes the Ti-O/F coordination.
Topics & Concepts
Materials sciencePhase (matter)Absorption (acoustics)Chemical bondCrystallographySpectroscopyAbsorption spectroscopyInfrared spectroscopyBond lengthX-ray absorption spectroscopyChemistryXANESPhysical chemistryAnalytical Chemistry (journal)Chemical compositionWork (physics)ThermodynamicsExtended X-ray absorption fine structureMXene and MAX Phase MaterialsIntermetallics and Advanced Alloy PropertiesElectromagnetic wave absorption materials