Change in magnetization of ferromagnetic Pd(001) ultrathin films induced by the strain effect of BaTiO3

Yusuke Ban; Katsuyoshi Komatsu; Shunsuke Sakuragi; Tomoyasu Taniyama; Hiroyuki Kageshima; Tetsuya Sato

doi:10.1063/1.5020956

Change in magnetization of ferromagnetic Pd(001) ultrathin films induced by the strain effect of BaTiO₃

Yusuke Ban, Katsuyoshi Komatsu, Shunsuke Sakuragi, Tomoyasu Taniyama, Hiroyuki Kageshima, Tetsuya Sato

Department of Applied Physics and Physico-Informatics

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

7 Citations (Scopus)

Abstract

We demonstrate changes in the saturation magnetization of Pd(001) ultrathin films exhibiting ferromagnetism in Pd/SrTiO₃/BaTiO₃ heterostructures due to the strain effect caused by the structural phase transition of BaTiO₃ substrates. When a BaTiO₃ substrate with a single domain formed by voltage application transitioned from the orthorhombic phase to the tetragonal phase, the saturation magnetization of Pd decreased by about 5%. The first-principles calculations, which assumed the distortion accompanied by the orthorhombic to the tetragonal structural phase transition, indicated a decrease by 3%-4% in the magnetization, which was consistent with the experimental results.

Original language	English
Article number	142409
Journal	Applied Physics Letters
Volume	112
Issue number	14
DOIs	https://doi.org/10.1063/1.5020956
Publication status	Published - 2018 Apr 2

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.5020956

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title = "Change in magnetization of ferromagnetic Pd(001) ultrathin films induced by the strain effect of BaTiO3",

abstract = "We demonstrate changes in the saturation magnetization of Pd(001) ultrathin films exhibiting ferromagnetism in Pd/SrTiO3/BaTiO3 heterostructures due to the strain effect caused by the structural phase transition of BaTiO3 substrates. When a BaTiO3 substrate with a single domain formed by voltage application transitioned from the orthorhombic phase to the tetragonal phase, the saturation magnetization of Pd decreased by about 5%. The first-principles calculations, which assumed the distortion accompanied by the orthorhombic to the tetragonal structural phase transition, indicated a decrease by 3%-4% in the magnetization, which was consistent with the experimental results.",

author = "Yusuke Ban and Katsuyoshi Komatsu and Shunsuke Sakuragi and Tomoyasu Taniyama and Hiroyuki Kageshima and Tetsuya Sato",

note = "Funding Information: The computation in this work was performed using the facilities at the Supercomputer Center, the Institute for Solid State Physics, the University of Tokyo. This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant Nos. #15J00298, 15H01998, 17H03377, and 16K14381) and the Asahi Glass Foundation. One of the authors (S.S.) also acknowledges a fellowship from the JSPS. Publisher Copyright: {\textcopyright} 2018 Author(s).",

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doi = "10.1063/1.5020956",

language = "English",

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AU - Ban, Yusuke

AU - Komatsu, Katsuyoshi

AU - Sakuragi, Shunsuke

AU - Taniyama, Tomoyasu

AU - Kageshima, Hiroyuki

AU - Sato, Tetsuya

N1 - Funding Information: The computation in this work was performed using the facilities at the Supercomputer Center, the Institute for Solid State Physics, the University of Tokyo. This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant Nos. #15J00298, 15H01998, 17H03377, and 16K14381) and the Asahi Glass Foundation. One of the authors (S.S.) also acknowledges a fellowship from the JSPS. Publisher Copyright: © 2018 Author(s).

PY - 2018/4/2

Y1 - 2018/4/2

N2 - We demonstrate changes in the saturation magnetization of Pd(001) ultrathin films exhibiting ferromagnetism in Pd/SrTiO3/BaTiO3 heterostructures due to the strain effect caused by the structural phase transition of BaTiO3 substrates. When a BaTiO3 substrate with a single domain formed by voltage application transitioned from the orthorhombic phase to the tetragonal phase, the saturation magnetization of Pd decreased by about 5%. The first-principles calculations, which assumed the distortion accompanied by the orthorhombic to the tetragonal structural phase transition, indicated a decrease by 3%-4% in the magnetization, which was consistent with the experimental results.

AB - We demonstrate changes in the saturation magnetization of Pd(001) ultrathin films exhibiting ferromagnetism in Pd/SrTiO3/BaTiO3 heterostructures due to the strain effect caused by the structural phase transition of BaTiO3 substrates. When a BaTiO3 substrate with a single domain formed by voltage application transitioned from the orthorhombic phase to the tetragonal phase, the saturation magnetization of Pd decreased by about 5%. The first-principles calculations, which assumed the distortion accompanied by the orthorhombic to the tetragonal structural phase transition, indicated a decrease by 3%-4% in the magnetization, which was consistent with the experimental results.

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JF - Applied Physics Letters

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Change in magnetization of ferromagnetic Pd(001) ultrathin films induced by the strain effect of BaTiO₃

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