Series of compositions Bi2(M′xM1−x)4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment

2010 ◽  
Vol 183 (11) ◽  
pp. 2582-2588 ◽  
Author(s):  
T. Debnath ◽  
C.H. Rüscher ◽  
P. Fielitz ◽  
S. Ohmann ◽  
G. Borchardt
Keyword(s):  
Crystal Structure ◽  
Structure Synthesis ◽  
Type Crystal

scholarly journals Crystal Structure, Synthesis and Biological Activity of Ether and Ester <i>Trans</i>-Ferulic Acid Derivatives

2018 ◽  
Vol 08 (04) ◽  
pp. 359-377 ◽  
Author(s):  
Marco A. Obregón-Mendoza ◽  
M. Mirian Estévez-Carmona ◽  
Yair Alvarez-Ricardo ◽  
William Meza-Morales ◽  
Carolina Escobedo-Martínez ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Biological Activity ◽  
Ferulic Acid ◽  
Structure Synthesis

scholarly journals Ge0.57Ti0.43O2: a new high-pressure material with rutile-type crystal structure

2018 ◽  
Vol 74 (7) ◽  
pp. 1010-1012 ◽  
Author(s):  
Emil Stoyanov ◽  
Kurt Leinenweber ◽  
Thomas L. Groy ◽  
Abds-Sami Malik
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
High Pressure ◽  
Single Crystals ◽  
Structure Type ◽  
Site Symmetry ◽  
Rutile Structure ◽  
High Pressure And Temperature ◽  
Atom Position ◽  
Type Crystal

Single crystals of a GeO2–TiO2 solid solution with the corresponding composition Ge0.57Ti0.43O2 (germanium titanium tetraoxide) were obtained by devitrification of germania-titania glass at high pressure and temperature. The new compound crystallizes in the rutile structure type (space group P42/mnm), where Ge and Ti share the same position M (site symmetry m.mm), with occupancy values of 0.57 (3) and 0.43 (3), respectively, and one O-atom position (m.2m). The M site is in a sixfold O-atom coordination and, as in the original TiO2 rutile structure, an elongation of the O—M—O bonds along the c-axis direction of the coordination polyhedron and deviation of the angles from 90° lead to a decrease in the coordination symmetry from octahedral to tetragonal. The Ge and Ti atoms are fully disordered in the structure, which indicates that the rutile structure is surprisingly pliant given the differing sizes of the two cations.

Crystal structure, synthesis and photoluminescent properties of a reddish-orange light emitting SrGdAlO4: Sm3+ nanophosphor

2019 ◽  
Vol 232 ◽  
pp. 39-48 ◽  
Author(s):  
Anju Hooda ◽  
S.P. Khatkar ◽  
Avni Khatkar ◽  
R.K. Malik ◽  
Jyoti Dalal ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Light Emitting ◽  
Structure Synthesis ◽  
Reddish Orange

U(Ni1−xGax)5 novel compounds with CaCu5-type: crystal structure and magnetism

1995 ◽  
Vol 139 (1-2) ◽  
pp. 23-32 ◽  
Author(s):  
A. Zelinsky ◽  
Yu.N. Grin ◽  
K. Hiebl ◽  
P. Rogl ◽  
H. Noël ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Type Crystal
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