Lattice Constants and Thermal Expansion of AgCl up to 878 °C by X-Ray Method

1964 ◽  
Vol 5 (1) ◽  
pp. 73-75 ◽  
Author(s):  
B. N. Dutta ◽  
B. Dayal
Keyword(s):  
Thermal Expansion ◽  
Ray Method ◽  
X Ray ◽  
Lattice Constants

Thermal Expansion of Some Azides by a Single Crystal X-Ray Method

1972 ◽  
Author(s):  
F. A. Mauer ◽  
T. A. Hahn ◽  
Hugh C. Wolfe ◽  
M. G. Graham ◽  
H. E. Hagy
Keyword(s):  
Thermal Expansion ◽  
Single Crystal ◽  
Ray Method ◽  
X Ray

Thermal expansion coefficients and Gruneisen parameters of quartz at high temperature by X-ray method

1994 ◽  
Vol 9 (2) ◽  
pp. 148-150
Author(s):  
Nabil N. Rammo ◽  
Saad B. Farid
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Ambient Temperature ◽  
Least Squares ◽  
Temperature Variation ◽  
Ray Method ◽  
X Ray ◽  
Least Squares Fitting ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

The temperature variation of the interplanar spacings (101), (112), and (211) of 325 mesh quartz was determined in the range 300–966 °K using X-ray powder diffractometry. The measured lattice parameters have been found to increase nonlinearly with temperature, and the dependence has been expressed by a polynomial of second degree from the least-squares fitting of the data, the results of which are presented herein. Values are given for the thermal expansion coefficients and Gruneisen parameter in the range 300 to 768 °K. In the range 768–966 °K, the expansion is zero. The derivatives dαa/dT, dαc/dT, and dαv/dT at ambient temperature are also given.

The thermal expansion of staurolite, Fe4Al18Si8O44(OH)4

1981 ◽  
Vol 44 (333) ◽  
pp. 69-72 ◽  
Author(s):  
K. Gibbons ◽  
M. J. Dempsey ◽  
C. M. B. Henderson
Keyword(s):  
Thermal Expansion ◽  
Computer Modelling ◽  
Complex Structures ◽  
X Ray Diffraction ◽  
Ray Method ◽  
X Ray ◽  
Temperature Ranges ◽  
Expansion Coefficients ◽  
Expansion Behaviour ◽  
Good Agreement

AbstractThe thermal expansion of iron end-member staurolite has been studied by high-temperature powder X-ray diffraction methods and by modelling with the Distance Least Squares (DLS) computer program. The X-ray approach was complicated by dehydroxylation of the staurolite. Mean linear expansion coefficients for the a, b, and c cell edges of dehydroxylated staurolite determined by the X-ray method are (× 10−6 °C−1); 20–500 °C, 8.93, 8.23, and 7.95, respectively, and 20–800 °C, 7.85, 9.43, and 9.13, respectively. Expansion coefficients of a, b, and c calculated for hydroxylated staurolite using the DLS program over the same temperature ranges are (7.86, 7.18, and 7.55 × 10−6 °C−1) and (7.87, 7.17, and 7.57 × 10−6 °C−1). The good agreement between the results from the two methods supports the use of computer modelling in estimating the thermal expansion behaviour of complex structures. The latter approach could be preferable for studying hydrated minerals.

Thermal Expansion of Rutile-Type GeO, by the X-Ray Method

1968 ◽  
Vol 51 (8) ◽  
pp. 467-468 ◽  
Author(s):  
K. V. KRISHNA RAO ◽  
S. V. NAGENDER NAIDU ◽  
LEELA IYENGAR
Keyword(s):  
Thermal Expansion ◽  
Ray Method ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document