Measurement of thermal properties of thin films up to high temperatures-Pulsed photothermal radiometry system and Si-B-C-N films

Martan, J.; Cˇapek, J.; Chalhoub, E. Amin
December 2010
Review of Scientific Instruments;Dec2010, Vol. 81 Issue 12, p124902
Academic Journal
A new arrangement of two-detector pulsed photothermal radiometry measurement system has been developed enabling temperature dependence measurement of thermal properties of thin films up to high temperatures. Only a few methods are available in this temperature range for thin films' thermal properties investigation, but there is a need for their knowledge in the fields of high-temperature electronics and high-speed machining. The present system enables simultaneous determination of the thin film effusivity, thermal conductivity, and volumetric specific heat in the temperature range from room temperature to 600 °C. The samples are placed in a vacuum chamber. The temperatures in the system were verified by an independent measurement and the system was tested on known bulk samples. Advantages and shortcomings of the method when used at higher temperatures and in the vacuum are described and discussed. Furthermore, Si-B-C-N thin films were studied. These amorphous ceramic materials possess an interesting set of mechanical and thermal properties. In particular, the films of the investigated chemical composition exhibit an excellent thermal stability at temperatures of up to 1700 °C. In the studied temperature range, from 20 to 600 °C, the thermal conductivity increased with increasing temperature from 1.72 to 1.89 W m-1 K-1 and volumetric specific heat increased from 2.65 to 3.76 × 106 J m-3 K-1.


Related Articles

  • Analytical insights into thermophysical properties of nanomaterials. Chou, Rone-Hwa; Pan, Ci-Ling // European Physical Journal - Applied Physics;Jan2014, Vol. 65 Issue 1, p00 

    Using the discrete ordinate method, we solve the equations of phonon radiative transfer for thin films analytically, and deduce closed-form expressions for three thermophysical properties including the phonon intensity, heat flux density and effective phonon thermal conductivity. These...

  • Interpretation of transport measurements in ZnO-thin films. Petukhov, Vladimir; Stoemenos, John; Rothman, Johan; Bakin, Andrey; Waag, Andreas // Applied Physics A: Materials Science & Processing;Jan2011, Vol. 102 Issue 1, p161 

    In order to interpret results of temperature dependent Hall measurements in heteroepitaxial ZnO-thin films, we adopted a multilayer conductivity model considering carrier-transport through the interfacial layer with degenerate electron gas as well as the upper part of ZnO layers with lower...

  • Determination of the intrinsic temperature dependent thermal conductivity from analysis of surface temperature of laser irradiated materials. Elhadj, Selim; Matthews, Manyalibo J.; Yang, Steven T.; Cooke, Diane J.; Stolken, James S.; Vignes, Ryan M.; Draggoo, Vaughn G.; Bisson, Scott E. // Applied Physics Letters;2/15/2010, Vol. 96 Issue 7, p071110 

    An experimental and analytical approach is described to determine the temperature dependent intrinsic lattice thermal conductivity, k(T), for a broad range of materials. k(T) of silica, sapphire, spinel, and lithium fluoride were derived from surface temperature measurements. Surfaces were...

  • Minimum thermal conductivity considerations in aerogel thin films. Hopkins, Patrick E.; Kaehr, Bryan; Piekos, Edward S.; Dunphy, Darren; Jeffrey Brinker, C. // Journal of Applied Physics;Jun2012, Vol. 111 Issue 11, p113532 

    We demonstrate the use time domain thermoreflectance (TDTR) to measure the thermal conductivity of the solid silica network of aerogel thin-films. TDTR presents a unique experimental capability for measuring the thermal conductivity of porous media due to the nanosecond time domain aspect of the...

  • CALCULATION OF TEMPERATURE MODES IN PROVIDING FLEXIBLE ROAD PAVEMENT PATCHING. Ycvscycv, Ye. Yu.; Matvcycv, V. N.; Zubkov, A. F. // Scientific Herald of the Voronezh State University of Architectu;2013, Vol. 18 Issue 2, p45 

    Statement of the problem. The quality of flexible road pavement repair depends on the temperature of compaction of road concrete mix. The change in temperature of the mixture depends on external factors (ambient temperature, humidity, presence of wind), as well as of the technology of works. The...

  • Measurement of Thermophysical Property of Energy Storage System (CaCl2â‹…NH3 System). Yuki Sakamoto; Hideki Yamamoto // Natural Resources (2158-706X);Sep2014, Vol. 5 Issue 12, p687 

    In order to measure the thermophysical properties of ammoniated salt (CaCl2â‹…mNH3: m = 4, 8) as an energy storage system utilizing natural resources, the measurement unit was developed, and the thermophysical properties (effective thermal conductivity and thermal diffusivity) of...

  • A semianalytical solution for the 3ω method including the effect of heater thermal conduction. Gurrum, Siva P.; King, William P.; Joshi, Yogendra K. // Journal of Applied Physics;Jun2008, Vol. 103 Issue 11, p113517 

    A semianalytical solution for the 3ω method is derived to account for thermal conduction within the metallic heater. The existing uniform heat flux approximation between the metal heater and substrate is replaced by a more realistic uniform heat generation condition within the metal heater....

  • A unit for measuring the effective thermal conductivity of thin-layer materials. Freyberg, G.; Chernov, S. // Instruments & Experimental Techniques;Jan2013, Vol. 56 Issue 1, p113 

    An experimental setup for determination of the absolute values of thermal-conductivity and heattransfer coefficients of thin-layer spacers at room temperature and higher is described. The experimental data processing procedure is given.

  • Estudio Comparativo de la Densidad de Estados en Muestras de Silicio Microcristalino Obtenida a Través del Método de Conductividad Térmicamente Estimulada y Técnicas de Fotoconductividad Modulada. Dussan, A.; Schmidt, J. A.; Koropecki, R. R. // Revista Colombiana de Física;2008, Vol. 40 Issue 2, p434 

    In this work density of states (DOS) was obtained on boron-doped microcrystalline silicon samples [µc-Si:H (B)] from the thermally stimulated conductivity (TSC) technique and compared with results obtained by the modulated photoconductivity methods. To explain the poor agreement between the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics