Labyrinth-type domain structure of heteroepitaxial SrMnO2.5 film

Shunsuke Kobayashi, Yuichi Ikuhara, Takahisa Yamamoto

Research output: Contribution to journalArticlepeer-review

11 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
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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