Low-temperature amorphous-like Pb(ZrxTi1-x)O3 for optical waveguiding applications

J. Lappalainen, J. Puustinen, Jussi Hiltunen, V. Lantto, H. Jantunen

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Lead-zirconate-titanate Pb0.97Nd0.02(Zr0.55Ti0.45)O3 films were grown on MgO(100) substrates at room temperature by pulsed laser deposition. Films were left amorphous or post-annealed at temperatures from 100°C to 400°C. X-ray diffraction, Raman spectroscopy, scanning electron microscopy, spectrophotometry, and prism-coupler methods were used for characterization. Initially amorphous films went through glass transformation when post-annealing temperature increased above 250°C and above 300°C, Raman spectroscopy revealed Pb–O and Ti–O7 vibration modes. At the same time, surfaces flattened to Rq ≈ 2–5 Å, transmittance increased remarkably, and very sharp optical modes Δβ ≤ 0.00046 could be coupled into films.
    Original languageEnglish
    Pages (from-to)211-219
    Number of pages9
    JournalFerroelectrics
    Volume405
    Issue number1
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

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