TY - JOUR
T1 - Structural refinements of Yb2BaCuO5 and Lu2BaCuO5 by powder neutron diffraction
AU - Lightfoot, P.
AU - Pei, Shiyou
AU - Jorgensen, J. D.
AU - Chang, Y. C.
AU - Jiang, P. Z.
AU - Veal, B. W.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The structure of the "211" or "green phases," Yb2BaCuO5 and Lu2BaCuO5, have been refined from time-of-flight powder neutron diffraction data. Both crystallize in the orthorhombic system, space group Pnma, with lattice parameters a = 12.0588(1), Å, b = 5.6123(1), Å, c = 7.0535(1), Å, and a = 12.0314(1), Å, b = 5.5989(1), Å, c = 7.0380(1), Å, respectively. The phases are isostructural with Y2BaCuO5, consisting of a three-dimensional framework of MO7 units (M = Yb, Lu) enclosing cavities occupied by the Ba and Cu atoms. Ba is 11-coordinate and Cu 5-coordinate, in a distored squarepyramidal environment.
AB - The structure of the "211" or "green phases," Yb2BaCuO5 and Lu2BaCuO5, have been refined from time-of-flight powder neutron diffraction data. Both crystallize in the orthorhombic system, space group Pnma, with lattice parameters a = 12.0588(1), Å, b = 5.6123(1), Å, c = 7.0535(1), Å, and a = 12.0314(1), Å, b = 5.5989(1), Å, c = 7.0380(1), Å, respectively. The phases are isostructural with Y2BaCuO5, consisting of a three-dimensional framework of MO7 units (M = Yb, Lu) enclosing cavities occupied by the Ba and Cu atoms. Ba is 11-coordinate and Cu 5-coordinate, in a distored squarepyramidal environment.
UR - http://www.scopus.com/inward/record.url?scp=0042029341&partnerID=8YFLogxK
U2 - 10.1016/0022-4596(90)90281-2
DO - 10.1016/0022-4596(90)90281-2
M3 - Article
AN - SCOPUS:0042029341
SN - 0022-4596
VL - 89
SP - 385
EP - 388
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 2
ER -