Microstructure and electrical properties of La0.7Sr0.3MnO3 thin films deposited by metallo-organic decomposition method

Zhan Jie Wang, Hirokazu Usuki, Toshihide Kumagai, Hiroyuki Kokawa

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Lanthanum strontium manganate (La0.7Sr0.3MnO3: LSMO) thin films were grown on SiO2/Si substrates by a metallo-organic decomposition method, and their crystalline structure, microstructure and electrical properties were investigated. X-ray diffraction analysis indicated that La0.7Sr0.3MnO3 films with a perovskite single phase could be obtained by annealing at 700 °C. Transmission electron microscopy (TEM) images showed that the films consisted of packed grains with a mean grain size of approximately 25 nm. The resistivity of the La0.7Sr0.3MnO3 films decreased rapidly as the annealing temperature increased from 550 to 700 °C, and did not change greatly with increasing annealing temperature from 700 °C. The La0.7Sr0.3MnO3 films annealed at 700 °C had a lower resistivity of 5.70×10-4 Ω m.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalJournal of Crystal Growth
Volume293
Issue number1
DOIs
Publication statusPublished - 2006 Jul 15

Keywords

  • A1. Crystal structure
  • A1. Microstructure
  • A1. X-ray diffraction
  • B1. Oxides
  • B1. Perovskites
  • B2. Electric materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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