Interfaces between solution-derived LiMn2O4 thin films and MgO and Au/MgO substrates

Yumi H. Ikuhara, Xiuliang Ma, Yuji Iwamoto, Yuichi Ikuhara, Koichi Kikuta, Shin Ichi Hirano

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Spinel LiMn2O4 thin films have been prepared on MgO(110) and Au/MgO(110) substrates by a chemical solution deposition method. The interfaces between film and substrate were characterized by means of high-resolution transmission electron microscopy (HREM) as well as x-ray diffraction. Cross-sectional HREM observation revealed that LiMn2O4 films grew epitaxially on the MgO(110) and Au/MgO(110) substrates. In the LiMn2O4/MgO system, misfit dislocations formed to accommodate the lattice strain at the LiMn2O4/MgO interface. In the LiMn2O4/Au/MgO system, Au grew epitaxially on the MgO substrate with its surface facetted along (111) planes, probably because the surface energy of this plane is relatively low. The formation of these facets is considered to have a favorable effect on the growth of (111) planes of LiMn2O4 when deposited on the Au film.

Original languageEnglish
Pages (from-to)358-366
Number of pages9
JournalJournal of Materials Research
Volume17
Issue number2
DOIs
Publication statusPublished - 2002 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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