Abstract
Lanthanum-modified lead zirconate titanate (PLZT) ceramics were obtained with high transmittance in the visible range by a combination of an inexpensive chemical processing and hot pressing. Optical, microstructural, pyroelectric, ferroelectric and dielectric properties characterized in this study attested the applicability of the employed method in the production of PLZT transparent ferroelectric ceramics. In fact, the corresponding analyzed physical parameters are in very good agreement with those obtained in samples traditionally prepared by other methods. Furthermore, due to high sample quality, a phenomenological analysis of the PLZT 10/65/35 relaxor features was performed in these ceramics.
Highlights
Transparent ferroelectric ceramics (TFC) were produced by Haertling and Land in 1969 at the Sandia National Laboratories after about ten years of extensive work based on lead titanate zirconate (PZT)[1]
Taking in mind the influence of the aging effects on the physical properties of pressed transparent lanthanum modified lead titanate zirconate (PLZT) ceramics, the data were collected using samples aged for one day, following a procedure employed by Kutnjak et al.[8] in similar studies
The X-ray diffraction pattern of the hot-pressed PLZT 10/65/35 ceramic, which may be observed in Fig. 2, reveals a single-phase material with pseudo-cubic perovskite structure
Summary
Transparent ferroelectric ceramics (TFC) were produced by Haertling and Land in 1969 at the Sandia National Laboratories after about ten years of extensive work based on lead titanate zirconate (PZT)[1]. One year later, Haertling and Land reported a novel powder processing of PLZT by chemical routes[3] This process was based on co-precipitation of alkoxides in presence of PbO and proportioned high chemical and optical uniformity of the hot-pressed PLZT slugs, which started to be produced in commercial scale. Menegazzo and Eiras[5] have developed an alternative two-stage calcination process to obtain high chemical homogeneity in lead titanate zirconate ceramics. It was developed a chemical method in which all constituents are dissolved and co-precipitated from the same source solution. The focus is the microstructural, optical, pyroelectric, ferroelectric and dielectric characterizations of the synthesized PLZT ceramic bodies to discuss their physical features and potential quality for applications
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
