Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration

doi:10.1063/1.4942645

Title: Reversible control of magnetism in La _0.67Sr _0.33MnO ₃ through chemically-induced oxygen migration

Abstract

We demonstrate reversible control of magnetization and anisotropy in La _0.67Sr _0.33MnO ₃ films through interfacial oxygen migration. Gd metal capping layers deposited onto La _0.67Sr _0.33MnO ₃ leach oxygen from the film through a solid-state redox reaction to form porous Gd ₂O ₃. X-ray absorption and polarized neutron reflectometry measurements show Mn valence alterations consistent with high oxygen vacancy concentrations, resulting in suppressed magnetization and increased coercive fields. Effects of the oxygen migration are observed both at the interface and also throughout the majority of a 40 nm thick film, suggesting extensive diffusion of oxygen vacancies. After Gd-capped La _0.67Sr _0.33MnO ₃ is exposed to atmospheric oxygen for a prolonged period of time, oxygen diffuses through the Gd ₂O ₃ layer and the magnetization of the La _0.67Sr _0.33MnO ₃ returns to the uncapped value. In conclusion, these findings showcase perovskite heterostructures as ideal candidates for developing functional interfaces through chemically-induced oxygen migration.

Authors:

Grutter, A. J. ^[1];

^[1];

^[2]; Arenholz, E. ^[3];

^[1]; Borchers, J. A. ^[1]; Suzuki, Y. ^[4];

^[5]; Kirby, B. J. ^[1]

National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Stanford Univ., CA (United States). Dept. of Materials Science and Engineering; Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States). Dept. of Applied Physics
Univ. of California, Davis, CA (United States). Dept. of Physics

Publication Date:: 2016-02-22

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1418493

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 108; Journal Issue: 8; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Grutter, A. J., Gilbert, D. A., Alaan, U. S., Arenholz, E., Maranville, B. B., Borchers, J. A., Suzuki, Y., Liu, Kai, and Kirby, B. J. Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration.  United States: N. p., 2016. 
        Web.  doi:10.1063/1.4942645.

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                    Grutter, A. J., Gilbert, D. A., Alaan, U. S., Arenholz, E., Maranville, B. B., Borchers, J. A., Suzuki, Y., Liu, Kai, & Kirby, B. J. Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration.  United States.  doi:10.1063/1.4942645.

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                    Grutter, A. J., Gilbert, D. A., Alaan, U. S., Arenholz, E., Maranville, B. B., Borchers, J. A., Suzuki, Y., Liu, Kai, and Kirby, B. J. Mon .  
        "Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration".  United States.  doi:10.1063/1.4942645.  https://www.osti.gov/servlets/purl/1418493.

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@article{osti_1418493,

  title        = {Reversible control of magnetism in La0.67Sr0.33MnO3 through chemically-induced oxygen migration},

  author       = {Grutter, A. J. and Gilbert, D. A. and Alaan, U. S. and Arenholz, E. and Maranville, B. B. and Borchers, J. A. and Suzuki, Y. and Liu, Kai and Kirby, B. J.},

  abstractNote = {We demonstrate reversible control of magnetization and anisotropy in La0.67Sr0.33MnO3 films through interfacial oxygen migration. Gd metal capping layers deposited onto La0.67Sr0.33MnO3 leach oxygen from the film through a solid-state redox reaction to form porous Gd2O3. X-ray absorption and polarized neutron reflectometry measurements show Mn valence alterations consistent with high oxygen vacancy concentrations, resulting in suppressed magnetization and increased coercive fields. Effects of the oxygen migration are observed both at the interface and also throughout the majority of a 40 nm thick film, suggesting extensive diffusion of oxygen vacancies. After Gd-capped La0.67Sr0.33MnO3 is exposed to atmospheric oxygen for a prolonged period of time, oxygen diffuses through the Gd2O3 layer and the magnetization of the La0.67Sr0.33MnO3 returns to the uncapped value. In conclusion, these findings showcase perovskite heterostructures as ideal candidates for developing functional interfaces through chemically-induced oxygen migration.},

  doi          = {10.1063/1.4942645},

  journal      = {Applied Physics Letters},

  number       = 8,

  volume       = 108,

  place        = {United States},

  year         = {2016},

  month        = {2}

}

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DOI: 10.1063/1.4942645

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Works referencing / citing this record:

Voltage‐Control of Magnetism in All‐Solid‐State and Solid/Liquid Magnetoelectric Composites
journal, February 2019

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Title: Reversible control of magnetism in La 0.67Sr 0.33MnO 3 through chemically-induced oxygen migration

Abstract

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Influence of alkylphosphonic acid grafting on the electronic and magnetic properties of La2/3Sr1/3MnO3 surfaces
journal, October 2015

Interfacial Ferromagnetism and Exchange Bias in ${CaRuO}_{3} / {CaMnO}_{3}$ Superlattices
journal, November 2012

Determination of absorption coefficients for concentrated samples by fluorescence detection
journal, June 1993

Voltage‐Control of Magnetism in All‐Solid‐State and Solid/Liquid Magnetoelectric Composites
journal, February 2019