Precipitate-free films of La 1-xSr xMnO 3 grown on the substrates with artificial step edges

Y. Ishii, H. Sato, A. Sawa, T. Yamada, H. Akoh, K. Endo, M. Kawasaki, Y. Tokura

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We have fabricated precipitate-free La 0.7Sr 0.3MnO 3 (LSMO) films by locating precipitate nucleation at artificial step edges patterned on SrTiO 3 substrates and absorbing excess species of off-stoichiometry by getter effect. The precipitate-free and atomically flat area of about 10 μm width can be obtained along the step edges by pulsed-laser deposition at a substrate temperature T s of ∼900 °C. Thermally activated processes are shown to be involved in such chemical reactions between the precipitates and surface migrating species. LSMO/SrTiO 3/LSMO tunnel junctions fabricated by this method showed an excellent uniformity of the junction resistances.

Original languageEnglish
Pages (from-to)3800-3802
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number17
DOIs
Publication statusPublished - 2004 Oct 25
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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