Longitudinal electroptic effects and photosensitivities of lead zirconate titanate thin films

Journal Article · Wed Nov 01 00:00:00 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), Vol. 72:11; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

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