Review Article

Survey of the Thermodynamic Properties of the Charge Density Wave Systems

Table 4

Three-dimensional materials. Molar volumes are given in cm3, specific heat discontinuities in J/molK, thermal expansion discontinuities in K−1, elastic velocity discontinuities in , and measured and calculated elastic constants in GPa and ratios.

MaterialsMolar volume
cm3
TCDW,TN
K
Specific heat
J/molK
Thermal expansion coefficient

K−1
Elastic velocity decreaseElastic Constant
GPa
calculated
ρV2
GPa
Ratio
calculated
/measured

LaAgSb2
62.8TCDW1= 210
TCDW2= 185
0.5
[44]
0.1
[44]
axis
2.2x10−6
-5x10−7[44]
No measurement

Cr7.2TN= 3103 [53]along
-7x10−6 [54]
along
-0.03 [54]
C11=400GPa
[54]
770~2