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

Research output: Contribution to journalArticle

3 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 languageEnglish
Article number142409
JournalApplied Physics Letters
Volume112
Issue number14
DOIs
Publication statusPublished - 2018 Apr 2

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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