Labyrinth-type domain structure of heteroepitaxial SrMnO2.5 film

Shunsuke Kobayashi, Yuichi Ikuhara, Takahisa Yamamoto

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    SrMnO2.5 films grown on SrTiO3 and LSAT substrates were prepared and oxygen vacancies in the films were directly confirmed by annular bright-field imaging in a scanning transmission electron microscope. The SrMnO2.5 films show a unique maze like pattern of domains, i.e., a labyrinth-type domain structure, that arises from relaxation of strain induced by lattice mismatches. The behavior of the domain widths is explained by the geometrical relationship for estimating of the average distance of misfit dislocations. We present useful principles for controlling the domain structures with a view to potential practical applications.

    Original languageEnglish
    Article number231911
    JournalApplied Physics Letters
    Issue number23
    Publication statusPublished - 2013 Jun 10

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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