Electrical properties of a-axis aligned lanthanum-modified lead titanate thin films prepared using sol-gel process

Dae Sung Yoon, Chang Jung Kim, Joon Sung Lee, Chan Gi Choi, Won Jong Lee, Kwangsoo No

Research output: Contribution to journalArticle


The (100) epitaxial lanthanum-modified lead titanate (PLT) film was fabricated using sol-gel method on platinized MgO substrates. The substrate used was Pt(100)/Ti(100)/MgO where Pt and Ti layers had been sputter-deposited at 600°C. We used the direct furnace insertion method and the crystallization temperature of 700°C in order to fabricate the epitaxial film. The phase of the film was examined using x-ray diffraction (XRD) and the film orientation was examined by pole figure and x-ray rocking curves. The epitaxial PLT thin film had higher dielectric constant and better ferroelectricity and fatigue resistance than the polycrystalline films. However, it shows higher leakage current than the polycrystalline film.

Original languageEnglish
Pages (from-to)277-282
Number of pages6
JournalMetals and Materials International
Issue number4
Publication statusPublished - 1997 Jan 1
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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