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Related Experiment Video

Updated: Jun 16, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

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Evolution of optical thin films by sputtering.

W J Coleman

    Applied Optics
    |February 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Sputter deposition produced optical thin films with superior refractive indices, abrasion resistance, and substrate adherence compared to vacuum vapor deposition. Reproducible intermediate refractive indices were not achieved, with some films showing absorption.

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    Area of Science:

    • Materials Science
    • Optical Engineering
    • Thin Film Technology

    Background:

    • Optical thin films are crucial for various photonic applications.
    • Traditional vacuum vapor deposition methods have limitations in achieving desired film properties.
    • Sputter deposition offers potential for enhanced optical thin film characteristics.

    Purpose of the Study:

    • To investigate sputter deposition for creating optical thin films of TiO(2), ZrO(2), and CeO(2).
    • To evaluate the refractive index, abrasion resistance, and substrate adherence of sputtered films.
    • To explore the feasibility of achieving intermediate refractive indices and depositing MgF(2) films.

    Main Methods:

    • Sputter deposition technique was employed for film fabrication.

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  • Optical properties, including refractive index and spectral absorption, were analyzed.
  • Abrasion resistance and substrate adherence were assessed.
  • Film thickness was monitored and evaluated for reproducibility.
  • Main Results:

    • Sputtered TiO(2), ZrO(2), and CeO(2) films exhibited higher refractive indices, improved abrasion resistance, and better substrate adherence than vacuum vapor deposited films.
    • SiO(2) and SiO films were successfully produced with refractive indices of 1.4 and 1.9, respectively.
    • Reproducible intermediate refractive indices were not achieved, and some films displayed short-wavelength absorption.
    • MgF(2) deposition using Freon 14 was moderately successful.
    • Film thickness monitoring showed accuracy within +/-2% for TiO(2), CeO(2), and SiO(2).

    Conclusions:

    • Sputter deposition is a viable technique for producing high-performance optical thin films with enhanced properties.
    • Challenges remain in achieving reproducible intermediate refractive indices and controlling absorption in certain materials.
    • The thickness-time relationship provides a reliable method for monitoring film deposition.