The heat capacity of single-crystal AuZn near the martensitic transition

Heat capacities, third-law entropies and thermodynamic functions of the negative thermal expansion material Zn2GeO4 from T=(0 to 400) K

“…The apparatus on which the very low temperature heat capacities were measured has been described in some detail by Lashley et al [55]. For the study of Zn 2 GeO 4 , the isothermal technique was employed from 8 6 ðT =KÞ 6 45 while the semi-adiabatic pulse technique was used from 0:5 6 ðT =KÞ 6 10.…”

Heat capacities, third-law entropies and thermodynamic functions of the geometrically frustrated antiferromagnetic spinels GeCo2O4 and GeNi2O4 from T=(0 to 400) K

“…Below 30 K, the copper results were compared to the zero-field, low-temperature data of Holste et al [32], Martin [33], and unpublished data of Phillips et al [34], and above T ¼ 30 K the results were compared to additional measurements of Martin [30]. Our results fell within 0:005 Á C p of the scatter obtained from the reference measurements, and our resolution was 0:001 Á C p [23]. Because the low temperature data are scaled down by approximately 5%, the uncertainty in the derived thermodynamic functions, J , at T ¼ 298:15 K must be increased to 0:004 Á J because of the large contribution of transitions measured with the semi-adiabatic apparatus.…”

“…A Lake Shore Cernox 1030 thermometer [21] was used in the measurements from 0:5 6 ðT =KÞ 6 33. This thermometer was calibrated in-house against the Tinsley [24] 100-X rhodium-iron thermometer (SN B160) described previously [23]. This instrument uses a semi-adiabatic pulse technique at low temperatures and an isothermal technique at higher temperatures.…”

“…The very low-temperature heat capacities were measured with an apparatus designed around a commercial 3 He insert capable of attaining temperatures between T ¼ 0:4 K and T ¼ 100 K. A similar apparatus has been described elsewhere [22] and further details of our apparatus have been described recently in the literature [23]. A Lake Shore Cernox 1030 thermometer [21] was used in the measurements from 0:5 6 ðT =KÞ 6 33.…”

Specific heat measurements of TiB2 and 6LiF from 0.5 to 30K

“…The working range of this instrument is typically from 0.45 K up to a maximum of 40-100 K, depending on the overall thermal conductivity of the sample. A description of a similar apparatus as well as additional details of the current apparatus can be found elsewhere [5,6]. The specific heat values obtained from this instrument typically have an accuracy better than 0.25% with a precision better than 0.1% based on measurements of a high purity copper sample.…”