Antiferrodistortive reconstruction of the PbTiO(3)(001) surface.
We present in situ x-ray scattering measurements of the surface structures of PbTiO(3) (001) in equilibrium with PbO vapor. At 875 to 1025 K, a reconstruction having c(2x2) symmetry is present under most conditions, while a 1 x 6 reconstruction occurs under PbO-poor conditions. The atomic structure of the c(2x2) phase is found to consist of a single layer of an antiferrodistortive structure with oxygen cages counter-rotated by 10 degrees about the titanium ions.
Munkholm
A
A
Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Streiffer
S K
SK
Ramana Murty
M V
MV
Eastman
J A
JA
Thompson
Carol
C
Auciello
O
O
Thompson
L
L
Moore
J F
JF
Stephenson
G B
GB