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Single-Crystal Thin Films of SrFeO2 and LaNiO2 with Infinite-Layer Structures

Published online by Cambridge University Press:  01 February 2011

Yuichi Shimakawa ,
Satoru Inoue ,
Masanori Kawai ,
Noriya Ichikawa ,
Masaichiro Mizumaki  and
Naomi Kawamura
Yuichi Shimakawa
Affiliation:
shimak@scl.kyoto-u.ac.jp, ICR, Kyoto University, Uji, Japan
Satoru Inoue
Affiliation:
inoue@msk.kuicr.kyoto-u.ac.jp, ICR, Kyoto University, Uji, Kyoto, Japan
Masanori Kawai
Affiliation:
kawai@msk.kuicr.kyoto-u.ac.jp, ICR, Kyoto University, Uji, Kyoto, Japan
Noriya Ichikawa
Affiliation:
nori@msk.kuicr.kyoto-u.ac.jp, ICR, Kyoto University, Uji, Kyoto, Japan
Masaichiro Mizumaki
Affiliation:
mizumaki@spring8.or.jp, JASRI/SPring-8, Sayo, Hyogo, Japan
Naomi Kawamura
Affiliation:
naochan@spring8.or.jp, JASRI/SPring-8, Sayo, Hyogo, Japan
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Abstract

Infinite-layer-structure epitaxial thin films of SrFeO2 and LaNiO2 respectively were prepared by low-temperature reduction with CaH2 from brownmillerite SrFeO2.5 and perovskite LaNiO3 epitaxial thin films grown on single-crystal substrates. The reduction process, removing oxygen ions from the perovskite-structure framework and causing rearrangements of oxygen ions, topotactically transforms the initial compounds to the c-axis oriented infinite-layer-structure epitaxial thin films. Consequently, the oxidation state of transition-metal ions in the film changed in wide ranges.

Keywords

thin filmoxidestructural
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1148: Symposium PP – Solid-State Chemistry of Inorganic Materials VII , 2008 , 1148-PP07-08
Copyright
Copyright © Materials Research Society 2009

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References

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