Structure, sound velocity, and thermal conductivity of the perovskite NdGaO3

2000 ◽  
Vol 26 (5) ◽  
pp. 370-374 ◽  
Author(s):  
A. I. Krivchikov ◽  
B. Ya. Gorodilov ◽  
I. G. Kolobov ◽  
A. I. Érenburg ◽  
D. I. Savitskiı̆ ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Sound Velocity

FIRST-PRINCIPLES INVESTIGATION OF THE ELECTRONIC, ELASTIC AND THERMODYNAMIC PROPERTIES OF SUPERCONDUCTING MgB2

2014 ◽  
Vol 28 (10) ◽  
pp. 1450057 ◽  
Author(s):  
HONGYING LU ◽  
JIANPING LONG ◽  
LIJUN YANG ◽  
WEN HUANG
Keyword(s):  
Thermal Conductivity ◽  
Sound Velocity ◽  
Debye Temperature ◽  
First Principles ◽  
Function Theory ◽  
Density Function Theory ◽  
Generalized Gradient ◽  
Generalized Gradient Approximation ◽  
Anisotropy Index ◽  
Longitudinal Sound Velocity

The electronic structure, elastic properties, Debye temperature and thermal conductivity of MgB 2 are investigated by using the first-principles density function theory within the generalized gradient approximation (GGA). The calculated elastic constants indicate that the MgB 2 is mechanically stable. The shear modulus, Young's modulus, Poisson's ratio, σ, the ratio B/G and universal anisotropy index are also calculated. Finally, the averaged sound velocity, longitudinal sound velocity, transverse sound velocity, Debye temperature and thermal conductivity are obtained.

Thermal conductivity and sound velocity measurements of plasma enhanced chemical vapor deposited a-SiC:H thin films

2011 ◽  
Vol 519 (22) ◽  
pp. 7895-7898 ◽  
Author(s):  
D.B. Hondongwa ◽  
L.R. Olasov ◽  
B.C. Daly ◽  
S.W. King ◽  
J. Bielefeld
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Sound Velocity ◽  
Chemical Vapor ◽  
Velocity Measurements ◽  
Chemical Vapor Deposited

Low temperature heat release, sound velocity and attenuation, specific heat and thermal conductivity in polymers

1995 ◽  
Vol 98 (5-6) ◽  
pp. 517-547 ◽  
Author(s):  
A. Nittke ◽  
M. Scherl ◽  
P. Esquinazi ◽  
W. Lorenz ◽  
Junyun Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Specific Heat ◽  
Heat Release ◽  
Sound Velocity ◽  
Temperature Heat

Effect of Ce Substitution on Mechanical and Thermal Properties of Tetragonal YSZ: First-Principles Calculations

2015 ◽  
Vol 1120-1121 ◽  
pp. 73-84
Author(s):  
Lei Jin ◽  
Pei Zhong Li ◽  
Guo Dong Zhou ◽  
Wei Gao ◽  
Jiang Ning Ma ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Sound Velocity ◽  
Young’S Modulus ◽  
Elastic Constants ◽  
First Principles ◽  
Density Functional ◽  
Young's Modulus ◽  
Mechanical And Thermal Properties ◽  
Ce Substitution

The effect of impurity Ce on the mechanical and thermal properties of tetragonal ZrO2 stabilized by rare earth element Y (YSZ) have been studied using first principles density functional theory within generalized gradient approximation (GGA) for the exchange correlation potential. The predicted elastic constants indicate that YSZ and Ce doped YSZ (CeYSZ) are mechanically stable structures. And then the numerical estimates of bulk modulus, shear modulus, Young’s modulus, Poisson’s ratio, sound velocity and minimum thermal conductivity were performed using the calculated elastic constants and analyzed for the first time. The values of sound velocity from different orientations are also reported. The agreement between the results of the available experiments and our calculations was satisfactory. Our calculated results indicate that Young’s modulus, hardness, mean sound velocity and minimum thermal conductivity of YSZ can be decreased by Ce substitution. The reasons are from the “softened” Ce-O bond strength using bond population and relative volume change under external hydrostatic pressure. Chemical bonding nature was also analyzed from the density of states and electron density difference.

Anisotropic in elasticity, sound velocity and minimum thermal conductivity of Al–Cu intermetallic compounds

2020 ◽  
Vol 124 ◽  
pp. 106880
Author(s):  
Y.Z. Liu ◽  
B.C. Zheng ◽  
Y.X. Jian ◽  
L. Zhang ◽  
Y.L. Yi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Sound Velocity ◽  
Intermetallic Compounds
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