Low-temperature specific heat of selected ceramics
-
Pavel Svoboda
Abstract
Here we present an analysis of the low-temperature specific heat of selected nitrides (Cr3GaN, GaN, and InN) and niobates (CaNb2O6, Ca2Nb2O7, and Sr2Nb2O7). The low-temperature specific heat is considered as a sum of electronic and phonon contributions, where the electronic part is almost negligible. The phonon specific heat is then described using an additive combination of the Debye and Einstein approaches for acoustic and optical phonons, respectively, together with the correction for the anharmonicity of the phonon spectrum.
References
[1] D.C.Wallace, Thermodynamics of Crystals, Wiley, New York (1972).10.1119/1.1987046Suche in Google Scholar
[2] E.R.Gopal, Specific Heats at Low Temperatures, Heywood Books, London (1966).10.1007/978-1-4684-9081-7Suche in Google Scholar
[3] C.A.Martin: J. Phys.: Condens. Matter3 (1991) 5967.10.1088/0953-8984/3/32/005Suche in Google Scholar
[4] P.Svoboda, P.Javorský, M.Diviš, V.Sechovský, F.Honda, G.Oomi, A.A.Menovsky: Phys. Rev. B63 (2001) 212408.10.1103/PhysRevB.63.212408Suche in Google Scholar
[5] J.Leitner, M.Hampl, K.Rušžička, M.Straka, D.Sedmidubský, P.Svoboda: Thermochimica Acta475 (2008) 33.10.1016/j.tca.2008.06.010Suche in Google Scholar
[6] J.Leitner et al.: J. Alloys and Compounds, in press.Suche in Google Scholar
[7] http://www.qdusa.com/products/ppms.html.Suche in Google Scholar
© 2009, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- History
- Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
- Surface and grain-boundary segregation studied by quantitative AES and XPS
- High temperature mechanical spectroscopy of fine-grained ceramics
- The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
- f-Element hydrides: structure and magnetism
- Basic
- Hydrogen as a probe into 5f-magnetism
- Magnetism in PrPdSn and NdPdSn studied on single crystals
- Magnetic properties of fcc Ni-based transition metal alloys
- X-ray characterization of magnetic digital alloys
- Are RENiAl hydrides metallic?
- HoZn5Al3: rare-earth magnetism in a new structure type
- The influence of substitutions on the magnetocaloric effect in RCo2 compounds
- Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
- Electrochemical properties of fine-grained AZ31 magnesium alloy
- Severe plastic deformation in Gum Metal with composition at the structural stability limit
- Applied
- Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
- Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
- Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
- Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
- Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
- Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
- Low-temperature specific heat of selected ceramics
- Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
- Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
- Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
- Notifications
- Personal
Artikel in diesem Heft
- Contents
- Contents
- History
- Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
- Surface and grain-boundary segregation studied by quantitative AES and XPS
- High temperature mechanical spectroscopy of fine-grained ceramics
- The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
- f-Element hydrides: structure and magnetism
- Basic
- Hydrogen as a probe into 5f-magnetism
- Magnetism in PrPdSn and NdPdSn studied on single crystals
- Magnetic properties of fcc Ni-based transition metal alloys
- X-ray characterization of magnetic digital alloys
- Are RENiAl hydrides metallic?
- HoZn5Al3: rare-earth magnetism in a new structure type
- The influence of substitutions on the magnetocaloric effect in RCo2 compounds
- Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
- Electrochemical properties of fine-grained AZ31 magnesium alloy
- Severe plastic deformation in Gum Metal with composition at the structural stability limit
- Applied
- Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
- Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
- Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
- Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
- Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
- Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
- Low-temperature specific heat of selected ceramics
- Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
- Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
- Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
- Notifications
- Personal
