A novel, layered phase in Ti-rich SrTiO3 epitaxial thin films.

Lee, Sungki; Damodaran, Anoop R; Gorai, Prashun; Oh, Nuri; Moyer, Jarrett A; Kwon, Ji-Hwan; Ferdous, Naheed; Shah, Amish et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

Sr2Ti7O14, a new phase, is synthesized by leveraging the innate chemical and thermo-dynamic instabilities in the SrTiO3-TiO2 system and non-equilibrium growth techniques. The chemical composition, epitaxial relationships, and orientation play roles in the formation of this novel layered phase, which, in turn, possesses unusual charge ordering, anti-ferromagnetic ordering, and low, glass-like thermal conductivity.