Electrical and Thermal Properties of Cr2GeC

被引:16
作者
Barsoum, M. W. [2 ]
Scabarozi, T. H. [2 ]
Amini, S. [1 ]
Hettinger, J. D. [3 ]
Lofland, S. E. [3 ]
机构
[1] United Technol Res Ctr, E Hartford, CT 06108 USA
[2] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[3] Rowan Univ, Dept Phys & Astron, Glassboro, NJ 08028 USA
关键词
D O I
10.1111/j.1551-2916.2011.04886.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Herein we report on the 4-300 K resistivity, magnetoresistance, Hall and Seebeck coefficients and heat capacity of Cr2GeC. The results-analyzed within a two-band model-confirm that Cr2GeC is a compensated conductor where the concentration of electrons and holes are almost equal; the same is true of the mobilities. The room-temperature thermal conductivity is 22 W.(m.K)(-1); roughly half the heat is carried by phonons, half by electrons. The heat capacity results confirm previous results.
引用
收藏
页码:4123 / 4126
页数:4
相关论文
共 18 条
[1]   Synthesis and elastic and mechanical properties of Cr2GeC [J].
Amini, Shahram ;
Zhou, Aiguo ;
Gupta, Surojit ;
DeVillier, Andrew ;
Finkel, Peter ;
Barsoum, Michel W. .
JOURNAL OF MATERIALS RESEARCH, 2008, 23 (08) :2157-2165
[2]   The MN+1AXN phases:: A new class of solids;: Thermodynamically stable nanolaminates [J].
Barsoum, MW .
PROGRESS IN SOLID STATE CHEMISTRY, 2000, 28 (1-4) :201-281
[3]   On the heat capacities of Ta2AlC, Ti2SC, and Cr2GeC [J].
Drulis, Monika K. ;
Drulis, H. ;
Hackemer, A. E. ;
Leaffer, O. ;
Spanier, J. ;
Amini, S. ;
Barsoum, M. W. ;
Guilbert, T. ;
El-Raghy, T. .
JOURNAL OF APPLIED PHYSICS, 2008, 104 (02)
[4]   Electronic, thermal, and elastic properties of Ti3Si1-xGexC2 solid solutions -: art. no. 085104 [J].
Finkel, P ;
Seaman, B ;
Harrell, K ;
Palma, J ;
Hettinger, JD ;
Lofland, SE ;
Ganguly, A ;
Barsoum, MW ;
Sun, Z ;
Li, S ;
Ahuja, R .
PHYSICAL REVIEW B, 2004, 70 (08) :085104-1
[5]   Magnetotransport properties of the ternary carbide Ti3SiC2:: Hall effect, magnetoresistance, and magnetic susceptibility -: art. no. 035113 [J].
Finkel, P ;
Hettinger, JD ;
Lofland, SE ;
Barsoum, MW ;
El-Raghy, T .
PHYSICAL REVIEW B, 2002, 65 (03) :1-4
[6]   Electrical transport, thermal transport, and elastic properties of M2AlC (M=Ti, Cr, Nb, and V) -: art. no. 115120 [J].
Hettinger, JD ;
Lofland, SE ;
Finkel, P ;
Meehan, T ;
Palma, J ;
Harrell, K ;
Gupta, S ;
Ganguly, A ;
El-Raghy, T ;
Barsoum, MW .
PHYSICAL REVIEW B, 2005, 72 (11)
[7]   KOHLENSTOFFHALTIGE TERNARE VERBINDUNGEN (V-GE-C, NB-GA-C, TA-GA-C, TA-GE C, CR-GA-C UND CR-GE-C) [J].
JEITSCHKO, W ;
NOWOTNY, H ;
BENESOVSKY, F .
MONATSHEFTE FUR CHEMIE, 1963, 94 (05) :844-&
[8]   Temperature-Dependent Crystal Structures of Ti2AlN and Cr2GeC as Determined from High Temperature Neutron Diffraction [J].
Lane, Nina J. ;
Vogel, Sven C. ;
Barsoum, Michel W. .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (10) :3473-3479
[9]   On Raman scattering from selected M2AC compounds [J].
Leaffer, Oren D. ;
Gupta, Surojit ;
Barsoum, Michel W. ;
Spanier, Jonathan E. .
JOURNAL OF MATERIALS RESEARCH, 2007, 22 (10) :2651-2654
[10]   Elastic and electronic properties of select M2AX phases [J].
Lofland, SE ;
Hettinger, JD ;
Harrell, K ;
Finkel, P ;
Gupta, S ;
Barsoum, MW ;
Hug, G .
APPLIED PHYSICS LETTERS, 2004, 84 (04) :508-510