In:
Applied Physics Letters, AIP Publishing, Vol. 70, No. 24 ( 1997-06-16), p. 3221-3223
Abstract:
Superlattice reflections observed for the first time in the room temperature powder neutron diffraction patterns of (Pb0.5Ca0.5)TiO3 (PCT50) are shown to arise due to an orthorhombic distortion (space group Pbnm) resulting from tilted TiO6 octahedra and off-center location of Pb2+/Ca2+. From a study of the temperature dependence of the real and imaginary parts of the dielectric constant at various frequencies, PCT50 is found to be a relaxor ferroelectric. It is proposed that the structural frustration introduced by the tilted octahedra may be responsible for the relaxor behavior.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
1997
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
Permalink