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

研究成果: Article査読

7 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)3800-3802
ページ数3
ジャーナルApplied Physics Letters
85
17
DOI
出版ステータスPublished - 2004 10 25
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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