Synthesis, crystal structure, cationic mobility, thermal evolution and spectroscopic study of Cs8(UO2)4(WO4)4(WO5)2 containing infinite uranyl tungstate chains

2007 ◽  
Vol 9 (10) ◽  
pp. 933-943 ◽  
Author(s):  
Saïd Yagoubi ◽  
Saïd Obbade ◽  
Mohamed Benseghir ◽  
Francis Abraham ◽  
Mohamed Saadi
Keyword(s):  
Crystal Structure ◽  
Spectroscopic Study ◽  
Thermal Evolution

Iron in kornerupine; a57Fe Moessbauer spectroscopic study and comparison with single-crystal structure refinement

1999 ◽  
Vol 84 (4) ◽  
pp. 536-549 ◽  
Author(s):  
Edward S. Grew ◽  
Guenther J. Redhammer ◽  
Georg Amthauer ◽  
Mark A. Cooper ◽  
Frank C. Hawthorne ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Spectroscopic Study ◽  
Structure Refinement ◽  
Single Crystal Structure ◽  
Crystal Structure Refinement

Synthesis, crystal structure and spectroscopic study of para substituted 2-hydroxy-3-methoxybenzalideneanilines

2003 ◽  
Vol 658 (1-2) ◽  
pp. 87-99 ◽  
Author(s):  
Guan-Yeow Yeap ◽  
Sie-Tiong Ha ◽  
Nobuo Ishizawa ◽  
Katsumi Suda ◽  
Peng-Lim Boey ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Spectroscopic Study

Crystal structure and spectroscopic study on photochromism of 1,3-diphenyl-4-(4′-fluoro)benzal-5-pyrazolone N(4)-phenyl semicarba-zone

2005 ◽  
Vol 752 (1-3) ◽  
pp. 124-129 ◽  
Author(s):  
Hui Chai ◽  
Guangfei Liu ◽  
Lang Liu ◽  
Dianzeng Jia ◽  
Zaiping Guo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Spectroscopic Study

Synthesis, crystal structure and a spectroscopic study of bistriphenylphosphine)gold(I)+ TCNQ−

Polyhedron ◽  
1998 ◽  
Vol 17 (13-14) ◽  
pp. 2379-2410 ◽  
Author(s):  
N.C. Baenziger ◽  
W.E. Bennett ◽  
D.M. Soboroff ◽  
P.S. O'Donnell ◽  
J.R. Doyle
Keyword(s):  
Crystal Structure ◽  
Spectroscopic Study

scholarly journals Thermal evolution of the crystal structure and phase transitions of KNbO 3

2018 ◽  
Vol 5 (6) ◽  
pp. 180368 ◽  
Author(s):  
S. L. Skjærvø ◽  
K. Høydalsvik ◽  
A. B. Blichfeld ◽  
M.-A. Einarsrud ◽  
T. Grande
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Thermal Evolution ◽  
Dynamical Instability ◽  
X Ray Diffraction ◽  
Two Phase ◽  
X Ray ◽  
Cell Parameters ◽  
First Order ◽  
Heating And Cooling

The thermal evolution of the crystal structure and phase transitions of KNbO 3 were investigated by high-temperature powder X-ray diffraction and Rietveld refinement of the diffraction data. Two phase transitions from orthorhombic ( Amm 2) to tetragonal ( P 4 mm ) and from tetragonal to cubic ( P m 3 ¯ m ) were confirmed, both on heating and cooling. Both phase transitions are first order based on the observed hysteresis. The mixed displacive and order–disorder nature of the tetragonal to cubic transition is argued based on symmetry and apparent divergence of the atomic positions from pseudo-cubic values. The transition between the orthorhombic and tetragonal phase shows no temperature-dependence for atomic positions and only thermal expansion of the unit cell parameters and is thus discussed in relation to a lattice dynamical instability.

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