Synthesis and crystal structure of new rare-earth copper oxyselenides: RCuSeO (R= La, Sm, Gd and Y)
WJ Zhu, YZ Huang, C Dong, ZX Zhao - Materials research bulletin, 1994 - Elsevier
WJ Zhu, YZ Huang, C Dong, ZX Zhao
Materials research bulletin, 1994•ElsevierA new series of copper oxyselenides RCuSeO (R= La, Sm, Gd and Y) have been prepared
and studied by X-ray powder diffraction. The Sm-containing phase was determined to have
a tetragonal crystal structure with the lattice parameters a= 3.9512 (1) A ̊ and c= 8.7157 (2)
A ̊, the space group of which is P4/nmm. Its structure is built of a fluorite type layer [Sm 2 O
2] and an anti-fluorite type layer [Cu 2 Se 2] stacking alternatively along c direction. The
similarity of the diffraction patterns for the samples with R= La, Gd and Y to that of SmCuSeO …
and studied by X-ray powder diffraction. The Sm-containing phase was determined to have
a tetragonal crystal structure with the lattice parameters a= 3.9512 (1) A ̊ and c= 8.7157 (2)
A ̊, the space group of which is P4/nmm. Its structure is built of a fluorite type layer [Sm 2 O
2] and an anti-fluorite type layer [Cu 2 Se 2] stacking alternatively along c direction. The
similarity of the diffraction patterns for the samples with R= La, Gd and Y to that of SmCuSeO …
A new series of copper oxyselenides RCuSeO (R= La, Sm, Gd and Y) have been prepared and studied by X-ray powder diffraction. The Sm-containing phase was determined to have a tetragonal crystal structure with the lattice parameters a= 3.9512 (1) A ̊ and c= 8.7157 (2) A ̊, the space group of which is P4/nmm. Its structure is built of a fluorite type layer [Sm 2 O 2] and an anti-fluorite type layer [Cu 2 Se 2] stacking alternatively along c direction. The similarity of the diffraction patterns for the samples with R= La, Gd and Y to that of SmCuSeO suggests their assuming the same crystal structure.
Elsevier
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