Crystal Structure of Sr_0.4Ce_0.4TiO₃ Ceramics

Authors

Rick Ubic, Boise State UniversityFollow
Ganesanpotti Subodh, Institute of Interdisciplinary Sciences and Technology
Delphine Gout, Jülich Center for Neutron Science-SNS
Mailadil T. Sebastian, Institute of Interdisciplinary Sciences and Technology
Thomas Proffen, Los Alamos Neutron Science Center

Document Type

Article

Publication Date

9-1-2009

Abstract

A cerium-doped SrTiO₃ compound with the composition Sr_0.4Ce_0.4TiO₃ has been produced by conventional solid-state processing. The structure of this compound was analyzed by X-ray, electron, and neutron diffraction. While no superlattice can be observed via X-ray diffraction, both electron and neutron diffraction show evidence of a noncubic supercell caused by antiphase tilting of oxygen octahedra. The most likely space group is C2/c, corresponding to an a^-b^-b^- tilt system. Octahedra are tilted by ~5° about the pseudo-cubic a-axis and ~1.5° about the pseudo-cubic b- and c-axes.

Publication Information

Ubic, Rick; Subodh, Ganesanpotti; Gout, Delphine; Sebastian, Mailadil T.; and Proffen, Thomas. (2009). "Crystal Structure of Sr_0.4Ce_0.4TiO₃ Ceramics". Chemistry of Materials, 21(19), 4706-4710. https://doi.org/10.1021/cm9018698