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Correlation between microstructure, strain behavior, and acoustic emission of soft PZT ceramics

Hoffmann, Michael J. and Hammer, Matthias and Hammer, A. and Endriss, A. and Lupascu, Doru C. (2001):
Correlation between microstructure, strain behavior, and acoustic emission of soft PZT ceramics.
49, In: Acta Materialia, (7), pp. 1301-1310, ISSN 1359-6454, [Online-Edition: http://dx.doi.org/10.1016/S1359-6454(01)00025-8],
[Article]

Abstract

The influence of grain size and domain configuration on the microscopic and macroscopic electromechanical properties of soft lead zirconate titanate (PZT) ceramics were studied. Fine- and coarse-grained PZT ceramics with an average grain size of 1.5 and 3.5 mum were prepared using the conventional mixed oxide route and different sintering, conditions (1225 degreesC/2 h and 1300 degreesC/10 h). The experiments were performed on PZT with different Zr/Ti-ratios in order to obtain pure tetragonal (45/55), pure rhombohedral (60/40), and morphotropic (54/46) compositions. To distinguish between the intrinsic and extrinsic effect microscopic strain measurements (Synchrotron X-ray diffraction) were compared with macroscopic measurements of the mechanical hysteresis loop. The results were correlated with acoustic emission measurements which microscopically reflected the intrinsic and extrinsic contributions to the macroscopic strain of the different crystallographic modifications.

Item Type: Article
Erschienen: 2001
Creators: Hoffmann, Michael J. and Hammer, Matthias and Hammer, A. and Endriss, A. and Lupascu, Doru C.
Title: Correlation between microstructure, strain behavior, and acoustic emission of soft PZT ceramics
Language: English
Abstract:

The influence of grain size and domain configuration on the microscopic and macroscopic electromechanical properties of soft lead zirconate titanate (PZT) ceramics were studied. Fine- and coarse-grained PZT ceramics with an average grain size of 1.5 and 3.5 mum were prepared using the conventional mixed oxide route and different sintering, conditions (1225 degreesC/2 h and 1300 degreesC/10 h). The experiments were performed on PZT with different Zr/Ti-ratios in order to obtain pure tetragonal (45/55), pure rhombohedral (60/40), and morphotropic (54/46) compositions. To distinguish between the intrinsic and extrinsic effect microscopic strain measurements (Synchrotron X-ray diffraction) were compared with macroscopic measurements of the mechanical hysteresis loop. The results were correlated with acoustic emission measurements which microscopically reflected the intrinsic and extrinsic contributions to the macroscopic strain of the different crystallographic modifications.

Journal or Publication Title: Acta Materialia
Volume: 49
Number: 7
Uncontrolled Keywords: ceramics; microstructure; strain behavior; X-ray diffraction (XRD); acoustic; LEAD-ZIRCONATE-TITANATE; CRYSTAL ORIENTATION DEPENDENCE; MORPHOTROPIC-PHASE-BOUNDARY; PIEZOELECTRIC PROPERTIES; FERROELECTRIC CERAMICS; SIZE
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Jul 2011 08:45
Official URL: http://dx.doi.org/10.1016/S1359-6454(01)00025-8
Identification Number: doi:10.1016/S1359-6454(01)00025-8
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