Dielectric behavior at morphotropic phase boundary for PMN-PZT ceramics

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90394-8· OSTI ID:6253155

Shaw, Jin Chen; Liu, Kuo Shung; Lin, I Nan ^[1]

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1. National Tsing Hua Univ., Hsin-Hua (Taiwan, Province of China). Dept. of Materials Science

Lead zirconate titanate (PZT) ceramics, which have a wide range of industrial applications, are some of the most highly investigated piezoceramics. The dielectric constant (k) measured at low frequencies was found from previously published experimental results to increase after poling for the tetragonal phase and a decrease for the rhombohedral phase in PZT ceramics(11[approximately]14). For the composition closest to MPB, the change of dielectric constant after poling will be closer to zero. Accounting for the phenomenon of dielectric constant increases for the tetragonal phase and decreases for the rhombohedral phase after poling in PZT ceramics has been the subject of much research(12[approximately]16), but it has not been considered in PMN-PZT tri-components ceramics. The purpose of this work is to analyze the dielectric behavior at the morphotropic phase boundary for PMN-PZT tri-components ceramics and to understand the effects of the poling process for the crystal structures of the tetragonal and rhombohedral phase.

• OSTI ID: 6253155
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 29:7; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PZT
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
CERAMICS
PHASE TRANSFORMATIONS
LEAD COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties