Energy conversion with Zr-rich lead zirconate/titanate ceramics

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.119398· OSTI ID:542523

Duan, N; Cereceda, N; Noheda, B; Raul Fernandez-del-Castillo, J; Gonzalo, J A ^[1]

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1. Departamento de Fisica de Materiales, Universidad Autonoma de Madrid, 28049 Madrid (Spain)

The conversion efficiency and power output to convert thermal energy to electrical energy by means of a ferroelectric{endash}ferroelectric phase transition has been investigated. The material used was the ceramic mixed system lead zirconate/titanate (PZT) with a very Zr-enriched composition (Zr/Ti=97/3{percent}). We have studied the performance dependence on sample thickness and working frequency, the main relevant parameters for a given PZT composition. The observed optimum values of efficiency and power output are analyzed in terms of the two main characteristic relaxation times of the process, the thermal time (sample thickness dependent) and the electric time (thickness independent). Possible ways of improving the overall performance are discussed. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 542523
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 71; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
CERAMICS
ENERGY CONVERSION
FERROELECTRIC MATERIALS
FREQUENCY DEPENDENCE
LEAD COMPOUNDS
PHASE TRANSFORMATIONS
POLARIZATION
PZT
RELAXATION TIME
THERMOELECTRIC CONVERSION
THICKNESS