Pulsed laser deposition and structural analysis of Ba2Ti6O13 epitaxial thin film on the (210) surface of SrTiO3 single crystal

Autor: Ryota Kono, Kohei Hieda, Tomoharu Tokunaga, Ryoma Tamura, Ryotaro Masamura, Yasuyuki Hikita, Kazuhiko Kano, Takahisa Yamamoto
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Applied Physics Express, Vol 17, Iss 7, p 075503 (2024)
Druh dokumentu: article
ISSN: 1882-0786
DOI: 10.35848/1882-0786/ad605d
Popis: A single crystalline thin film of Ba _2 Ti _6 O _13 was grown on the (210) surface of a SrTiO _3 single-crystal substrate by pulsed laser deposition. Scanning transmission electron microscopy shows that the Ba _2 Ti _6 O _13 thin film grew epitaxially with the a -plane, and the b -/ c -axes of Ba _2 Ti _6 O _13 parallel to the (210) plane and the [00 $\bar{1}$ ]/[ $\bar{1}$ 20] directions of SrTiO _3 , respectively. The electrical conductance of the Ba _2 Ti _6 O _13 film was approximately one order larger than that of the reduced SrTiO _3− _δ single crystal with oxygen deficiency of roughly δ = 0.05. Electronic structure calculations predict that Ba _2 Ti _6 O _13 is an n-type degenerate semiconductor with spin-split states primarily of Ti 3d orbital.
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