Synthesis of Stoichiometric SrTiO3and Its Carrier Doping from Air-Stable Bimetallic Complexes

Ebube E. Oyeka; Daichi Oka; Eunsang Kwon; Tomoteru Fukumura

doi:10.1021/acs.inorgchem.0c03457

Synthesis of Stoichiometric SrTiO₃and Its Carrier Doping from Air-Stable Bimetallic Complexes

Ebube E. Oyeka, Daichi Oka, Eunsang Kwon, Tomoteru Fukumura

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate the synthesis of perovskite oxide SrTiO3 with ideal cation stoichiometry and homogeneous La doping using air-stable Sr-Ti and La-Ti bimetallic peroxo complexes with a 1:1 cation ratio. Phase-pure SrTiO3, La2Ti2O7, and LaTiO3 were successfully synthesized by thermal decomposition of those complexes. La-doped SrTiO3 was obtained by mixing the Sr-Ti and La-Ti complexes in an acid solution, followed by thermal decomposition. La-doped SrTiO3 showed systematic chemical trends in the lattice constant and electrical conduction. Not only those bulk polycrystals but also cation-stoichiometric SrTiO3 epitaxial thin films were grown with an atomically flat surface from the Sr-Ti complex.

Original language	English
Pages (from-to)	1277-1283
Number of pages	7
Journal	Inorganic chemistry
Volume	60
Issue number	3
DOIs	https://doi.org/10.1021/acs.inorgchem.0c03457
Publication status	Published - 2021 Feb 1

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/acs.inorgchem.0c03457

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title = "Synthesis of Stoichiometric SrTiO3and Its Carrier Doping from Air-Stable Bimetallic Complexes",

abstract = "We demonstrate the synthesis of perovskite oxide SrTiO3 with ideal cation stoichiometry and homogeneous La doping using air-stable Sr-Ti and La-Ti bimetallic peroxo complexes with a 1:1 cation ratio. Phase-pure SrTiO3, La2Ti2O7, and LaTiO3 were successfully synthesized by thermal decomposition of those complexes. La-doped SrTiO3 was obtained by mixing the Sr-Ti and La-Ti complexes in an acid solution, followed by thermal decomposition. La-doped SrTiO3 showed systematic chemical trends in the lattice constant and electrical conduction. Not only those bulk polycrystals but also cation-stoichiometric SrTiO3 epitaxial thin films were grown with an atomically flat surface from the Sr-Ti complex.",

author = "Oyeka, {Ebube E.} and Daichi Oka and Eunsang Kwon and Tomoteru Fukumura",

note = "Funding Information: We thank K. Ohmura of Tohoku University for her assistance in the XPS measurements carried out under the collaboration program of Cooperative Research and Development Center for Advanced Materials, Institute of Materials Research, Tohoku University. E.E.O. acknowledges the MEXT Scholarship from Ministry of Education, Culture, Sports, and Technology, Japan. This work was supported by JSPS KAKENHI (Grant 20H02704) and Nippon Sheet Glass Foundation for Materials Science and Engineering. Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

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doi = "10.1021/acs.inorgchem.0c03457",

language = "English",

volume = "60",

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journal = "Inorganic Chemistry",

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publisher = "American Chemical Society",

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T1 - Synthesis of Stoichiometric SrTiO3and Its Carrier Doping from Air-Stable Bimetallic Complexes

AU - Oyeka, Ebube E.

AU - Oka, Daichi

AU - Kwon, Eunsang

AU - Fukumura, Tomoteru

N1 - Funding Information: We thank K. Ohmura of Tohoku University for her assistance in the XPS measurements carried out under the collaboration program of Cooperative Research and Development Center for Advanced Materials, Institute of Materials Research, Tohoku University. E.E.O. acknowledges the MEXT Scholarship from Ministry of Education, Culture, Sports, and Technology, Japan. This work was supported by JSPS KAKENHI (Grant 20H02704) and Nippon Sheet Glass Foundation for Materials Science and Engineering. Publisher Copyright: © 2021 American Chemical Society.

PY - 2021/2/1

Y1 - 2021/2/1

N2 - We demonstrate the synthesis of perovskite oxide SrTiO3 with ideal cation stoichiometry and homogeneous La doping using air-stable Sr-Ti and La-Ti bimetallic peroxo complexes with a 1:1 cation ratio. Phase-pure SrTiO3, La2Ti2O7, and LaTiO3 were successfully synthesized by thermal decomposition of those complexes. La-doped SrTiO3 was obtained by mixing the Sr-Ti and La-Ti complexes in an acid solution, followed by thermal decomposition. La-doped SrTiO3 showed systematic chemical trends in the lattice constant and electrical conduction. Not only those bulk polycrystals but also cation-stoichiometric SrTiO3 epitaxial thin films were grown with an atomically flat surface from the Sr-Ti complex.

AB - We demonstrate the synthesis of perovskite oxide SrTiO3 with ideal cation stoichiometry and homogeneous La doping using air-stable Sr-Ti and La-Ti bimetallic peroxo complexes with a 1:1 cation ratio. Phase-pure SrTiO3, La2Ti2O7, and LaTiO3 were successfully synthesized by thermal decomposition of those complexes. La-doped SrTiO3 was obtained by mixing the Sr-Ti and La-Ti complexes in an acid solution, followed by thermal decomposition. La-doped SrTiO3 showed systematic chemical trends in the lattice constant and electrical conduction. Not only those bulk polycrystals but also cation-stoichiometric SrTiO3 epitaxial thin films were grown with an atomically flat surface from the Sr-Ti complex.

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DO - 10.1021/acs.inorgchem.0c03457

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VL - 60

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 3

ER -

Synthesis of Stoichiometric SrTiO₃and Its Carrier Doping from Air-Stable Bimetallic Complexes

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