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Research Article| February 13 2009

High-quality antiferromagnetic ${EuTiO}_{3}$ epitaxial thin films on ${SrTiO}_{3}$ prepared by pulsed laser deposition and postannealing

Koji Fujita;

Koji Fujita ^a)

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

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Naoki Wakasugi;

Naoki Wakasugi

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

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Shunsuke Murai;

Shunsuke Murai

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

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Yanhua Zong;

Yanhua Zong

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

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Katsuhisa Tanaka

Katsuhisa Tanaka

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

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Author & Article Information

Koji Fujita ^a)

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

Naoki Wakasugi

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

Shunsuke Murai

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

Yanhua Zong

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

Katsuhisa Tanaka

Department of Material Chemistry, Graduate School of Engineering,

Kyoto University

, Katsura, Nishikyo-ku, Kyoto 615-8510,

Japan

Electronic mail: [email protected].

Appl. Phys. Lett. 94, 062512 (2009)

https://doi.org/10.1063/1.3072598

We report on epitaxial growth and magnetic properties of ${EuTiO}_{3}$ thin films with a perovskite structure. Single crystalline ${EuTiO}_{3}$ films with atomically flat surface are grown on (001) surface of ${SrTiO}_{3}$ by pulsed laser deposition (PLD) and subsequent annealing in reducing atmosphere. The as-deposited films possess the crystal structure with an elongated $c$ -axis and tend to stabilize ferromagnetically ordered ${Eu}^{2 +}$ spins at low temperatures. Postannealing at $1000 ° C$ relaxes the out-of-plane lattice strain, and brings about a drastic change in magnetic structure; the annealed film becomes an antiferromagnet below Néel temperature of 5.1 K. The change in magnetic properties accompanied by the modification in lattice constant is discussed.

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© 2009 American Institute of Physics.

2009

American Institute of Physics

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