TY - JOUR
AU - C.J.D Hetherington
AU - Ramamoorthy Ramesh
AU - M.A O'Keefe
AU - R Kilaas
AU - G Thomas
AU - S.M Green
AU - H.L Luo
AB - We report results of high-resolution structure imaging, image processing, and simulation of the c=30.5 Å (Tc =80 K) and c=38.2 Å (Tc =115 K) superconducting polytypoids in the Bi-Ca-Sr-Cu-O system. The increase in c parameter is due to the insertion of two layers of Cu-O perovskite+Ca atoms in each unit cell. From the processed image and simulations, it appears that the central Cu layer in the c=38.2 Å polytypoid may be oxygen deficient. In addition, the image simulation experiments suggest that the oxygen atoms in the Bi-O layers are located at the face center of the Bi lattice.
BT - Applied Physics Letters
DO - 10.1063/1.100074
LA - eng
M1 - 11
N1 - cited By 23
N2 - We report results of high-resolution structure imaging, image processing, and simulation of the c=30.5 Å (Tc =80 K) and c=38.2 Å (Tc =115 K) superconducting polytypoids in the Bi-Ca-Sr-Cu-O system. The increase in c parameter is due to the insertion of two layers of Cu-O perovskite+Ca atoms in each unit cell. From the processed image and simulations, it appears that the central Cu layer in the c=38.2 Å polytypoid may be oxygen deficient. In addition, the image simulation experiments suggest that the oxygen atoms in the Bi-O layers are located at the face center of the Bi lattice.
PY - 1988
SP - 1016
EP - 1018
T2 - Applied Physics Letters
TI - High-resolution electron microscopy of the c=30.5 Å and c=38.2 Å polytypoids in the Bi-Ca-Sr-Cu-O superconductor
VL - 53
SN - 00036951
ER -