TY - JOUR
T1 - The relation between the local and the average structure of rhombohedral ferroelectric PbHf0.9Ti0.1O3
AU - Sicron, N.
AU - Stern, E. A.
AU - Yacoby, Y.
PY - 2000
Y1 - 2000
N2 - The local structure of the rhombohedral perovskite PbHf0.9Ti0.1O3 was studied using Pb, Hf and Ti X-ray absorption fine structure (XAFS). XAFS data were analyzed by fitting a parameterized theoretical spectrum to the experimental data. It was found that the structure of the TiO6 octahedron is very different from the structure of the HfO6 octahedron. Furthermore, the PbO and Pb-Pb bonds have very large Debye-Waller factors indicating that Pb and O atoms are disordered about the rhombohedral positions down to 11 K. Despite the structural disorder, the local structure of PbHf0.9Ti0.1O3 resembles the rhombohedral average structure more than the structure of PbHfO3 or PbTiO3. Since PbHf1-xTiO3 and PbZr1-xTiO3 have very similar phase diagrams, it is reasonable to assume that the same structural features characterize rhombohedral PbZr1-xTixO3.
AB - The local structure of the rhombohedral perovskite PbHf0.9Ti0.1O3 was studied using Pb, Hf and Ti X-ray absorption fine structure (XAFS). XAFS data were analyzed by fitting a parameterized theoretical spectrum to the experimental data. It was found that the structure of the TiO6 octahedron is very different from the structure of the HfO6 octahedron. Furthermore, the PbO and Pb-Pb bonds have very large Debye-Waller factors indicating that Pb and O atoms are disordered about the rhombohedral positions down to 11 K. Despite the structural disorder, the local structure of PbHf0.9Ti0.1O3 resembles the rhombohedral average structure more than the structure of PbHfO3 or PbTiO3. Since PbHf1-xTiO3 and PbZr1-xTiO3 have very similar phase diagrams, it is reasonable to assume that the same structural features characterize rhombohedral PbZr1-xTixO3.
KW - D. Ferroelectricity
KW - Structural disorder
UR - http://www.scopus.com/inward/record.url?scp=4444369662&partnerID=8YFLogxK
U2 - 10.1016/S0022-3697(99)00288-7
DO - 10.1016/S0022-3697(99)00288-7
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.conferencearticle???
AN - SCOPUS:4444369662
SN - 0022-3697
VL - 61
SP - 243
EP - 249
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 2
T2 - Proceedings of the 1999 Williamsburg Workshop on Ferroelectrics
Y2 - 31 January 1999 through 3 February 1999
ER -