Thermal expansion of decagonal Al70.7Co13.3Ni16.0 in the temperature range 15–300 K

2001 ◽  
Vol 216 (12) ◽  
Author(s):  
A. Kupsch ◽  
D. C. Meyer ◽  
P. Gille ◽  
P. Paufler
Keyword(s):  
Thermal Expansion ◽  
Temperature Dependence ◽  
Lattice Parameters ◽  
Temperature Range

AbstractThe temperature dependence of lattice parameters

Polymorphic transformations and thermal expansion of some modifications in Ag1.5Cu0.5Se and Ag0.4Cu1.6Se

2019 ◽  
Vol 33 (23) ◽  
pp. 1950271 ◽  
Author(s):  
Y. I. Aliyev ◽  
Y. G. Asadov ◽  
A. O. Dashdemirov ◽  
R. D. Aliyeva ◽  
T. G. Naghiyev ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Diffraction Method ◽  
Lattice Parameters ◽  
X Ray Diffraction ◽  
Polymorphic Transformations ◽  
X Ray

The Ag[Formula: see text]Cu[Formula: see text]Se and Ag[Formula: see text]Cu[Formula: see text]Se compounds have been synthesized and grown as single crystals. High-temperature X-ray diffraction method was used to study polymorphic transformations. It is shown that the Ag[Formula: see text]Cu[Formula: see text]Se crystals of high-temperature FCC modification are decomposed into Ag2Se and AgCuSe when the temperature decreases below T = 488 K and Ag[Formula: see text]Cu[Formula: see text]Se is decomposed into Cu2Se and AgCuSe when the temperature decreases below T = 540 K. Transformations in both compounds are reversible. Crystalline parameters are obtained and the temperature dependence of the lattice parameters for each phase is built.

Precise measurement of the lattice parameters of α-Al2O3in the temperature range 4.5–250 K using the Mössbauer wavelength standard

2003 ◽  
Vol 36 (4) ◽  
pp. 1075-1081 ◽  
Author(s):  
M. Lucht ◽  
M. Lerche ◽  
H.-C. Wille ◽  
Yu. V. Shvyd'ko ◽  
H. D. Rüter ◽  
...  
Keyword(s):  
Experimental Data ◽  
Thermal Expansion ◽  
Experimental Method ◽  
Precise Measurement ◽  
Debye Model ◽  
Lattice Parameters ◽  
Nuclear Resonance ◽  
Temperature Range ◽  
Wavelength Standard ◽  
Better Than

The lattice parameters of α-Al2O3have been measured in a temperature range from 4.5 to 250 K with a relative accuracy of better than 6 × 10−6. The experimental method uses Bragg backscattering and the recently proposed Mössbauer wavelength standard,i.e.the wavelength λM= 86.025474 (16) pm of the nuclear resonance radiation of57Fe (Shvyd'koet al., 2000), which has previously been applied successfully to measure the lattice parameters of α-Al2O3at temperatures between 286 and 374 K (Shvyd'koet al., 2002). The experimental data in the range from 4.5 to 374 K are consistent with the Debye model of thermal expansion. At 4.5 K, the thermal expansion coefficient is as low as 1.2 (9) × 10−10 K−1in theadirection.

scholarly journals Studies on Thermophysical Properties of CaO and MgO by γ-Ray Attenuation

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
A. S. Madhusudhan Rao ◽  
K. Narender
Keyword(s):  
Thermal Expansion ◽  
Temperature Dependence ◽  
Thermophysical Properties ◽  
Linear Thermal Expansion ◽  
Temperature Dependent ◽  
Degree Polynomial ◽  
Attenuation Coefficients ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

The study on temperature dependent γ-ray attenuation and thermophysical properties of CaO and MgO has been carried out in the temperature range 300 K–1250 K using different energies of γ-beam, namely, Am (0.0595 MeV), Cs (0.66 MeV), and Co (1.173 MeV and 1.332 MeV) on γ-ray densitometer fabricated in our laboratory. The linear attenuation coefficients (μl) for the pellets of CaO and MgO as a function of temperature have been determined using γ-beam of different energies. The coefficients of temperature dependence of density have been reported. The variation of density and linear thermal expansion of CaO and MgO in the temperature range of 300 K–1250 K has been studied and compared with the results available in the literature. The temperature dependence of linear attenuation coefficients, density, and thermal expansion has been represented by second degree polynomial. Volume thermal expansion coefficients have been reported.

MAGNETO-ELASTIC PROPERTIES OF MnZnSb

1993 ◽  
Vol 07 (01n03) ◽  
pp. 895-898
Author(s):  
S. MORI ◽  
T. KANOMATA ◽  
H. YAMAUCHI ◽  
H. YOSHIDA ◽  
T. KANEKO
Keyword(s):  
Field Theory ◽  
Thermal Expansion ◽  
Curie Temperature ◽  
Temperature Dependence ◽  
Elastic Properties ◽  
Pressure Effect ◽  
Phenomenological Theory ◽  
Lattice Parameters ◽  
Molecular Field ◽  
Negative Exchange

The temperature dependence of the magnetization ,σ, the pressure effect on the Curie temperature, TC, and the thermal expansion for MnZnSb are measured. The value of dTC/dp is +3.6 K/kbar. Negative exchange strictions are observed for the lattice parameters a and c. The results are discussed using a phenomenological theory based on the molecular field theory.

scholarly journals Thermal expansion of nickel-chromium ChS88U alloy at high temperatures

2021 ◽  
Vol 2057 (1) ◽  
pp. 012116
Author(s):  
Yu M Kozlovskii ◽  
S V Stankus
Keyword(s):  
Thermal Expansion ◽  
Phase Transformation ◽  
Temperature Dependence ◽  
High Temperatures ◽  
Reference Values ◽  
Experimental Results ◽  
Temperature Range ◽  
Nickel Chromium ◽  
Estimated Error

Abstract The experimental results of the study of thermal expansion of nickel-chrome alloy in the temperature range of 293.15–1400 K are presented. The phase transformation of the first kind in the alloy is observed. The estimated error of the obtained data is 3%. Approximation equations and a table of reference values for the temperature dependence of the studied properties are obtained.

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