NIST Standard Reference Database 30
Last Update to Data Content: 2002
"Thermal Properties of Indium Nitride," S. Krukowsi, A. Witek, J. Adamczyk, J. Jun, M. Bockowski, I. Grzegroy, B. Lucznik, G. Nowak, M. Wroblewski, A. Presz, S. Gierlotka, S. Stelmach, B. Pa, Journal of Physics and Chemistry of Solids, Vol. 59 [3], pp. 289-295 (1998), published by Pergamon Press.Language: English
The authors cite A. Badzian et al., in Application of Diamond Films and Related Materials: Third International Conference, eds. A. Feldman et al., NIST Special Publication 895, Washington, p. 839 (1995), and summarize the procedure as follows. "A vertical flow gas system... was used in the growth of InN crystals. A 50 mm diameter and 1 m long quartz tube was used for InN synthesis under controlled flow of nitrogen. The nitrogen was ionized by microwaves generated by a microwave generator (made by Japan Radio Inc.). The location of nitrogen plasma in the tube was controlled by the position of the metal reflector at the other end of the microwave guide. The sample of In was located in the BN crucible, close to the center of the nitrogen plasma. Indium was heated by absorption of microwaves and thermal radiation of the plasma. Additionally, a resistance heater was used in order to change the growth temperature independently of microwave power output. ... In the growth experiments we used In of 6N grade purity and nitrogen of high purity, with traces of oxygen and water lower then 2 ppm. ... initially, the entire system was evacuated to a vacuum level of (1.3 Pa = 10-2 Torr). Subsequently, the pressure was gradually increased to the prescribed value by a relatively small influx of nitrogen. ... the N2 flow was 20 - 100 cm3/min. The pressure was controlled by continuous out-pumping of the nitrogen from the reactor and was kept in the range between 15 amd 300 mbar."
"The density of the InN crystals was measured by a pycnometric method using an AccuPyc 1330 pycnometer manufactured by Micromeritics."> Differential scanning calorimetry (DSC)
"The heat capacity measurements have been carried out at constant pressure. For these measurements a Differential Scanning Calorimeter DSC92, manufactured by SETARAM was used. ... the precision of the heat capacity measurements is better than 1%. ... samples of mass of the order of 400 mg were used... Initially, InN was preheated up to 400 °C in order to remove adsorbed water from its surface."Laser flash technique
The authors cite T.M. Hall, Rev. Sci. Instrum., Vol. 31, 125 (1960), and summarize the procedure as follows. "For the thermal diffusivity/conductivity measurements, a laser flash method was used. The laser flash method provides... thermal diffusivity D, permitting calculation of the thermal conductivity, k, provided that the specific heat, C and the density d are known, according to the formula:" k = D C d
| Density ( g cm-3 ) |
|---|
| 6.1 |
| Temperature ( K ) |
Specific Heat ( J kg-1 K-1 ) |
|---|---|
| 152 | 195 |
| 163 | 204 |
| 168 | 208 |
| 173 | 216 |
| 179 | 217 |
| 184 | 224 |
| 189 | 228 |
| 195 | 231 |
| 199 | 236 |
| 205 | 239 |
| 210 | 244 |
| 215 | 245 |
| 220 | 250 |
| 225 | 252 |
| 230 | 255 |
| 235 | 259 |
| 241 | 261 |
| 245 | 266 |
| 251 | 269 |
| 256 | 272 |
| 261 | 273 |
| 267 | 279 |
| 272 | 284 |
| 277 | 288 |
| 282 | 290 |
| 287 | 295 |
| 292 | 297 |
| 297 | 300 |
Data were digitized from Fig. 3 of the reference.
| Thermal Conductivity ( W m-1 K-1 ) |
|---|
| 38.4 |
| Thermal Diffusivity ( cm2 s-1 ) |
|---|
| 0.203 |