Longitudinal electroptic effects and photosensitivities of lead zirconate titanate thin films

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1989.tb06031.x· OSTI ID:7007735

Land, C E ^[1]

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1. Sandia National Labs., Albuquerque NM (US)

The feasibility of storing and reading high-density optical information in lead zirconate titanate (PZT) and in lead lanthanum zirconate titanate (PLZT) thin films depends on both the longitudinal electrooptic coefficients and the photosensitivities of the films. This paper describes the methods used to measure the longitudinal electrooptic effects and the photosensitivities of the films. The results of these measurements were used to evaluate a longitudinal quadratic electrooptic R coefficient, a longitudinal linear electrooptic r{sub c} coefficient, and the wavelength dependence of the photosensitivity of a composition of PZT polycrystalline thin film. The longitudinal electrooptic R and r{sub c} coefficients are about an order of magnitude less than the transverse R and r{sub c} coefficients of bulk ceramics of similar compositions. This is attributed to clamping of the film by the rigid substrate. The large birefringence of the films after poling (>10{sup {minus} 2}) suggests that the optic axes of the films are preferentially oriented normal to the film surface. The techniques used in this paper for evaluating the photosensitivities of thin films are based on measuring the photocurrent generated rather than the reduction in coercive voltage (as in bulk ceramics) when the film is exposed to light.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7007735
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 72:11; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
440600 -- Optical Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
CHALCOGENIDES
CHEMICAL COMPOSITION
COERCIVE FORCE
ELECTRO-OPTICAL EFFECTS
FEASIBILITY STUDIES
FILMS
INFORMATION SYSTEMS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LEAD COMPOUNDS
LEAD OXIDES
OPTICAL SYSTEMS
OXIDES
OXYGEN COMPOUNDS
PHOTOSENSITIVITY
RARE EARTH COMPOUNDS
SENSITIVITY
THIN FILMS
TITANATES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES