Stress- and strain-relaxation in lead zirconate titanate based ceramics

The stress- and strain-relaxation behavior of lead zirconate titanate based ceramics is studied by using the three-point bending test. The relaxation behavior has been explained based on the domain reorientation mechanism. It is found that the stress relaxation behavior obeys a logarithmic time law....

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Veröffentlicht in:	Materials chemistry and physics 2002-04, Vol.75 (1), p.186-189
Hauptverfasser:	Huang, Haitao, Tianshu, Zhang, Oh, Joo Tien, Hing, Peter
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric, piezoelectric, ferroelectric and antiferroelectric materials Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Ferroelectrics Mechanical properties Niobates, titanates, tantalates, pzt ceramics, etc Physics PZT Strain relaxation Stress relaxation
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Beschreibung
Zusammenfassung:	The stress- and strain-relaxation behavior of lead zirconate titanate based ceramics is studied by using the three-point bending test. The relaxation behavior has been explained based on the domain reorientation mechanism. It is found that the stress relaxation behavior obeys a logarithmic time law. It has also been experimentally confirmed that above the Curie temperature where all the domains disappear, there is no relaxation in the ferroelectric ceramics.
ISSN:	0254-0584 1879-3312
DOI:	10.1016/S0254-0584(02)00053-6