Structure‐Optical Property Correlation of Epitaxial Potassium Niobate Thin Films Deposited on Magnesium Oxide (100) Substrates Using a Strontium Titanate Transition Layer

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Epitaxial thin films of orthorhombic KNbO3 (100)/(010) were deposited on MgO (100) single‐crystal substrates by pulsed laser ablation using an ε120 Å SrTiO3 (110) transition layer in between. From X‐ray diffraction, the orientation relationships were determined as (010) [100] or (100) [010] KNb03∥ (110) [110] SrTiO3∥ (100) [011] MgO and (010) [001] or (100) [001] KNbO3∥ (110) [001] SrTiO3∥ (100) [011] MgO. The measured film refractive indices at 632.8 nm were 2.213 ± 0.003, 2.278 ± 0.003, and 2.285 ± 0.003, respectively, along MgO [100], [011], and [011] directions. A model was developed to correlate the measured effective refractive indices of the film to area fractions of domain variants in the film. Using the model, the area fraction of domains with their polarization axis normal to the substrate was estimated to be 60.0 ± 2.7%.

Original languageEnglish (US)
Pages (from-to)1825-1833
Number of pages9
JournalJournal of the American Ceramic Society
Volume78
Issue number7
DOIs
StatePublished - Jul 1995

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Structure‐Optical Property Correlation of Epitaxial Potassium Niobate Thin Films Deposited on Magnesium Oxide (100) Substrates Using a Strontium Titanate Transition Layer'. Together they form a unique fingerprint.

  • Cite this