Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
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.