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

Adsorption Process of CO2 on Silicalite-1 Zeolite Using Single-Crystal X-ray Method

Langmuir ◽  
2014 ◽  
Vol 30 (13) ◽  
pp. 3749-3753 ◽  
Author(s):  
Shinjiro Fujiyama ◽  
Natsumi Kamiya ◽  
Koji Nishi ◽  
Yoshinobu Yokomori
Keyword(s):  
Single Crystal ◽  
Adsorption Process ◽  
Ray Method ◽  
X Ray

X-ray Radiographs Taken with Silicon Single Crystal Wafers by Divergent X-ray Method

1964 ◽  
Vol 3 (3) ◽  
pp. 129-131 ◽  
Author(s):  
Takeo Fujiwara ◽  
Shoso Dohi ◽  
Junji Sunada
Keyword(s):  
Single Crystal ◽  
Silicon 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.

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