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Ionic order and magnetic properties of double-perovskite GdBaCo2O5.5 films on SrTiO3 substrates

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Title: Ionic order and magnetic properties of double-perovskite GdBaCo2O5.5 films on SrTiO3 substrates
Authors: Katayama, Tsukasa Browse this author →KAKEN DB
Chikamatsu, Akira Browse this author →KAKEN DB
Hasegawa, Tetsuya Browse this author →KAKEN DB
Keywords: Key-words
Double perovskite oxide
Epitaxial thin film
Issue Date: Jul-2022
Publisher: 社団法人 日本セラミックス協会(The Ceramic Society of Japan)
Journal Title: Journal of the Ceramic Society of Japan
Volume: 130
Issue: 7
Start Page: 429
End Page: 431
Publisher DOI: 10.2109/jcersj2.21174
Abstract: Double-perovskite GdBaCo2O5.5 epitaxial films were fabricated on SrTiO3(001) substrates. X-ray diffraction and scanning transmission electron microscopy measurements of a 37 nm thick film confirmed the ionic order of Gd and Ba along the out-of-plane direction. The Gd/Ba order was absent within the region 1 nm from the film/ substrate interface owing to the migration of Sr ions from the substrate. Unlike the 37 nm thick film, a thin film with a thickness of 10 nm did not show a distinct antiferromagnetic to ferromagnetic (FM) transition, whereas large magnetization was observed at low temperature. This was proposed to be because the cation-disordered phase near the interface was FM, even at low temperatures. ??2022 The Ceramic Society of Japan. All rights reserved.
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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