Details

Autor(en) / Beteiligte

• Scabarozi, T.
• Ganguly, A.
• Hettinger, J. D.
• Lofland, S. E.
• Amini, S.
• Finkel, P.
• El-Raghy, T.
• Barsoum, M. W.

Titel

Electronic and thermal properties of Ti 3 Al ( C 0.5 , N 0.5 ) 2 , Ti 2 Al ( C 0.5 , N 0.5 ) and Ti 2 AlN

Ist Teil von

• Journal of applied physics, 2008-10, Vol.104 (7), p.073713-073713-6

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2008

Quelle

American Institute of Physics

Beschreibungen/Notizen

• In this paper we report on the electronic, magnetotransport, thermoelectric, and thermal properties of Ti 3 Al ( C 0.5 , N 0.5 ) 2 , Ti 2 Al ( C 0.5 , N 0.5 ) , and Ti 2 AlN . The electrical conductivities, Hall coefficients, and magnetoresistances are analyzed within a two-band framework and compared with the end members, Ti 2 AlC and Ti 3 AlC 2 . The analysis shows that all compounds are compensated conductors with hole and electron carrier densities of about 1.5 × 10 27   m − 3 . The room temperature thermal conductivities of the carbonitrides are both over ≈ 50   W / mK , with the phonon contribution of Ti 3 Al ( C 0.5 , N 0.5 ) 2 particularly large at over 35 W/mK. The low-temperature specific heat of Ti 3 Al ( C 0.5 , N 0.5 ) 2 and Ti 2 Al ( C 0.5 , N 0.5 ) yield Debye temperatures of 685 and 724 K, respectively, comparable to those of the end members.