Composition dependence of electrooptic property of epitaxial (Pb,La)(Zr,Ti)O3 films

Hiromi Shima, Takashi Iijima, Takashi Nakajima, Soichiro Okamura

研究成果: Article査読


The Zr/Ti ratio dependence of refractive index and electrooptic coefficient of epitaxial (Pb,La)(Zr,Ti)O3 (PLZT) films were investigated. PLZT films were fabricated on La-doped SrTiO3 (La-STO) substrates by a chemical solution deposition (CSD) method. Optical properties in TE-and TM-modes were measured individually using a prism coupling method. The refractive indexes both in TE-and TM-modes were as large as that of the polycrystalline film, and increased with increasing Ti/(Zr + Ti) ratio. The refractive index in TE-mode was larger than that in TM-mode because the PLZT films received compressive stress from the La-STO substrates due to lattice mismatch. The refractive index in TM-mode almost linearly decreased with increasing applied an electric field while that in TE-mode slightly increased and saturated around at 200 kV/cm. The Pockels coefficient in TM-mode r33 showed large change for compositions, while that in TE-mode r13 showed little change. The maximum Pockels coefficient rc of 156 pm/V was obtained for the epitaxial PLZT film with Ti/(Zr + Ti) ratio of 50%.

ジャーナルJournal of the Ceramic Society of Japan
出版ステータスPublished - 2010 8月

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学


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